DXi Advanced Reporting

Transcription

1 User s Guide DXi Advanced Reporting Rev A * *

2 DXi Advanced Reporting User s Guide, Rev A, October 2015, Product of USA. Quantum Corporation provides this publication as is without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. Quantum Corporation may revise this publication from time to time without notice. COPYRIGHT STATEMENT 2015 Quantum Corporation. All rights reserved. Your right to copy this manual is limited by copyright law. Making copies or adaptations without prior written authorization of Quantum Corporation is prohibited by law and constitutes a punishable violation of the law. TRADEMARK STATEMENT Be Certain (and the Q brackets design), DLT, DXi, DXi Accent, DXi V1000, GoVault, Lattus, NDX, the Q logo, the Q Quantum logo, Q-Cloud, Quantum (and the Q brackets design), the Quantum logo, Quantum Be Certain (and the Q brackets design), Quantum Vision, Scalar, StorageCare, StorNext, SuperLoader, Symform, and the Symform logo (and design) are either registered trademarks or trademarks of Quantum Corporation and its affiliates in the United States and/or other countries. All other trademarks are the property of their respective owners. Products mentioned herein are for identification purposes only and may be registered trademarks or trademarks of their respective companies. All other brand names or trademarks are the property of their respective owners. Quantum specifications are subject to change. DXi Advanced Reporting User s Guide ii

3 Contents Contents Preface vi Chapter 1: About DXi Advanced Reporting 1 About DXi Advanced Reporting 1 DXi Advanced Reporting Logging Database 4 Date And Time Settings for DXi Advanced Reporting 5 Chapter 2: Navigation 7 The DXi Advanced Reporting UI 7 Logging On and Off DXi Advanced Reporting 8 DXi Advanced Reporting Features 10 Working with DXi Advanced Reporting Time Ranges 15 DXi Advanced Reporting Graph Features 18 Tips for Interpreting Performance Data About the Reports in DXi Advanced Reporting 26 Overview Report 28 Data Volume Overview Graph 28 Reduction Ratio Graph 30 DXi Advanced Reporting User s Guide iii

4 Contents Ethernet Activity Graph 31 Fibre Channel Activity Graph 33 Capacity Report 35 Disk Usage Graph 35 Before Reduction vs. After Reduction Graph 36 After Reduction Vs. Unique Data Found Graph 37 Capacity Detail Report 38 Before Reduction, After Reduction, and Unique Data Found Graphs 39 Allocated Disk Space Graph 40 Data Not Intended for Deduplication Graph 41 Capacity Delta Bytes/H and Bytes/S Reports 42 Combined Delta in Bytes/H and Bytes/S Graphs 42 Before Reduction, After Reduction, and Unique Data Found Graphs (Delta in Bytes/H and Bytes/S) 43 Allocated Disk Space Delta in Bytes/H or Bytes/S 45 Data Reduction Report 46 Deduplication Ratio And Compression Ratio Graphs 46 CPU Load Report 48 CPU Load Average Graph 48 CPU Stats in % Graph 49 Ethernet I/O Report 50 Ethn Activity Graph 50 Fibre Channel I/O Report 51 FCn Activity Graph 51 OST Statistics Report 52 OST Statistics Accent Graph 54 OST Statistics Ethernet Graph 55 OST Statistics Accelerator Graphs 56 OST Accent or Accelerator Node n Graph 59 DXi Advanced Reporting User s Guide iv

5 Contents Ingest (Chargeback) Reports 60 Ingest (Chargeback) Capacity Graphs 62 Ingest (Chargeback) Ingest Graphs 64 Exporting a Chargeback Ingest File 65 Ingest and Delete Report 69 Ingest and Deletions Graphs 69 Space Reclamation Report 71 Space Reclamation Progress Graph 71 Space Reclamation Bytes Graph 72 Space Reclamation/Compaction Graph 73 System Load Report 74 DXi Advanced Reporting User s Guide v

6 Preface Preface This manual introduces the Quantum DXi Advanced Reporting and contains the following chapters: About DXi Advanced Reporting About DXi Advanced Reporting Navigation About the Reports in DXi Advanced Reporting Audience This manual is written for DXi Advanced Reporting operators, system administrators, and field service engineers. Note: It is useful for the audience to have a basic understanding of UNIX and backup/recovery systems. Notational Conventions This manual uses the following conventions: Convention User input is shown in bold monospace font. Computer output and command line examples are shown in monospace font. Example./DARTinstall./DARTinstall User input variables are enclosed in angle brackets. DXi Advanced Reporting User s Guide vi

7 Preface Convention Example For UNIX and Linux commands, the command prompt is implied../dartinstall is the same as #./DARTinstall File and directory names, menu commands, button names, and window names are shown in bold font. Menu names separated by arrows indicate a sequence of menus to be navigated. /data/upload Utilities > Firmware The following formats indicate important information: Note: Note emphasizes important information related to the main topic. Caution: Caution indicates potential hazards to equipment or data. WARNING: Warning indicates potential hazards to personal safety. Right side of the system - Refers to the right side as you face the component being described. Left side of the system - Refers to the left side as you face the component being described. Data sizes are reported in base 1000 rather than base For example: o o o 1 MB = 1,000,000 bytes 1 GB = 1,000,000,000 bytes 1 TB = 1,000,000,000,000 bytes Product Safety Statements Quantum will not be held liable for damage arising from unauthorized use of the product. The user assumes all risk in this aspect. This unit is engineered and manufactured to meet all safety and regulatory requirements. Be aware that improper use may result in bodily injury, damage to the equipment, or interference with other equipment. DXi Advanced Reporting User s Guide vii

8 Preface Related Documents The following Quantum documents are also available for DXi Advanced Reporting: Document Number Document Title Document Description Quantum DXi-Series Release Notes Quantum DXi4700 User's Guide Quantum DXi6800 User s Guide Describes information specific to the current release of DXi Advance Reporting software. Descries DXi4700 operation and administration. Describes DXi6800 operation and administration. DXi Advanced Reporting User s Guide viii

9 Preface Document Number Document Title Document Description Quantum DXi6900 User s Guide Describes DXi6900 operation and administration. For the most up to date information on DXi Advanced Reporting, see: Contacts For information about contacting Quantum, including Quantum office locations, go to: Comments To provide comments or feedback about this document, or about other Quantum technical publications, send to: doc-comments@quantum.com Getting More Information or Help StorageCare, Quantum s comprehensive service approach, leverages advanced data access and diagnostics technologies with cross-environment, multi-vendor expertise to resolve backup issues faster and at lower cost. Accelerate service issue resolution with these exclusive Quantum StorageCare services: Service and Support Website - Register products, license software, browse Quantum Learning courses, check backup software and operating system support, and locate manuals, FAQs, firmware downloads, product updates and more in one convenient location. Get started at: esupport - Submit online service requests, update contact information, add attachments, and receive status updates via . Online Service accounts are free from Quantum. That account can also be used to access Quantum s Knowledge Base, a comprehensive repository of product support information. Get started at: StorageCare Guardian - Securely links Quantum hardware and the diagnostic data from the surrounding storage ecosystem to Quantum's Global Services Team for faster, more precise root cause DXi Advanced Reporting User s Guide ix

10 Preface diagnosis. StorageCare Guardian is simple to set up through the internet and provides secure, two-way communications with Quantum s Secure Service Center.Learn more at: For further assistance, or if training is desired, contact the Quantum Customer Support Center: Region North America EMEA Support Contact (toll free) (toll free) Asia Pacific (toll free) For worldwide support: Worldwide End-User Product Warranty For more information on the Quantum Worldwide End-User Standard Limited Product Warranty: DXi Advanced Reporting User s Guide x

11 Chapter 1: About DXi Advanced Reporting Chapter 1: About DXi Advanced Reporting This chapter contains the following topics: About DXi Advanced Reporting 1 DXi Advanced Reporting Logging Database 4 Date And Time Settings for DXi Advanced Reporting 5 About DXi Advanced Reporting DXi Advanced Reportingcombines comprehensive performance data logging with powerful visual reporting and analysis tools, which you can use both to identify potential problems with your DXi system and optimize your system's operation. DXi Advanced Reporting works with all DXi-Series disk backup systems. DXi Advanced Reporting User s Guide 1

12 Chapter 1: About DXi Advanced Reporting Figure 1: DXi Advanced Reporting User Interface Overview Report Remote Management Extension Advanced Reporting is an extension to the DXi remote management interface. With Advanced Reporting, you can view an array of performance statistics for DXi, and see how those statistics change over time. Use this information to identify trends or to determine when a problem began. By seeing how various operations affect performance, you can use Advanced Reporting to optimize your network ecosystem and business procedures for backup, recovery, and replication. On Demand Reports Advanced Reporting runs on DXi, continually working in the background to log performance data. You can access this data on the Advanced Reporting Web-based interface. Reports are available on demand, meaning that you can check up-to-the-minute system status or view data for any time period after data logging began. Use the reports in Advanced Reporting to access performance and system statistics, such as the following: DXi Advanced Reporting User s Guide 2

13 Chapter 1: About DXi Advanced Reporting Capacity utilization Ethernet and Fibre Channel activity CPU load Data deduplication Space reclamation activities OST, Accent, and NetBackup Accelerator backups Per Share and Partition (Chargeback) information Zoom Feature You can use the report tools to zoom in or out on a specific time period. All graphs within a report display data for the same time period, allowing you to compare performance data between graphs in the same report or between different reports. Example You want to view information about used storage space for the current week. Display the Capacity report and zoom into the current week. Compare how storage has been allocated for the current week using the report's graphs. Historical Data Advanced Reporting maintains logged data for a maximum of six years. Using this feature, you can compare current system performance to past system performance to determine what changes impact your system. Example You can view the effects of new network configurations on your system by comparing its current statistical reports to past ones. You can then determine which configurations increase or decrease performance, and use this information to optimally configure your system. Usage Scenarios DXi storage presentations are optimized for backup usage rather than for file sharing. Advanced Reporting provides the best results when you take advantage of the system's preferred implementation. Backup application usage is typically characterized by the following: Aggregated name spaces and file contents Limited direct, active file access DXi Advanced Reporting User s Guide 3

14 Chapter 1: About DXi Advanced Reporting DXi Advanced Reporting Logging Database Limited browsing, scanning, or viewing of information Limited metadata manipulation (including rename) If you use the system for file sharing, you should test the sharing process to ensure acceptable behavior with respect to functionality, performance, replication, and recovery. Note: We do not recommend using Backup Exec with Granular Recovery Technology (GRT) over a CIFS protocol. GRT frequently needs to overwrite portions of and append data to existing files. This process is inconsistent with the DXi usage scenarios. Instead, we recommend using OpenStorage (OST). DXi Advanced Reporting Logging Database DXi Advanced Reporting records performance data in its logging database. The database resides on the DXi system where Advanced Reporting runs. Round Robin Database Advanced Reporting uses a round robin style for its logging database, allowing it to maintain a small, fixed size. When new logging data is added to the database, older data is overwritten, as needed, to maintain the database's fixed size. As a result, the logging database has a negligible impact on the system's storage capacity. Data Resolution The logging database records performance data at two-second intervals. Advanced Reporting aggregates this data over time to maintain different resolutions for different time periods. The database resolution is finer or more granular for recent events. The database resolution becomes coarser or less granular as you go back in time. The following table shows the resolutions that are maintained in the logging database for each time period. Time Period Data logged within the last 7 days Data older than 7 days Database Resolution 2 seconds 60 seconds DXi Advanced Reporting User s Guide 4

15 Chapter 1: About DXi Advanced Reporting Date And Time Settings for DXi Advanced Reporting Performance Impact The logging of data performed by Advanced Reporting has a negligible impact on the operation and performance of DXi. Advanced Reporting captures most data once every two seconds, with a typical loop time of only 2 ms per capture. Advanced Reporting uses no more than 2 GB of total disk capacity for the logging database. Disk contention between Advanced Reporting and other system processes is rare. If it occurs, Advanced Reporting is given a lower priority than other system needs. Date And Time Settings for DXi Advanced Reporting Because data in the DXi Advanced Reporting database is time sensitive, you must correctly set the time and date on the DXi system before you install Advanced Reporting. To make sure the time and date are always correct, configure the system to use a Network Time Protocol (NTP) server. For help with this task, see the user s guide for your DXi system. Note: Not all Windows time servers offer NTP services. If a time server does not support the NTP protocol, you cannot use it as a time source for the system. In this case, a third party NTP application for Windows should work correctly. If the date and time are not set correctly on your system before you install Advanced Reporting, the following two issues can occur. Correlating Data to Events If the date and time are not correct on the system, it might be difficult to correlate Advanced Reporting data with replication activity, or to associate problems with events in the customer ecosystem. Example A report shows a problem occurred at 6:00 p.m. The time on the system is not set correctly, though. So, although the report shows the problem occurred at 6:00 p.m., the actual time the problem occurred was at 4:00 p.m. when the network became congested. Due to the time error, it may not apparent that the problem is associated with the network congestion. DXi Advanced Reporting User s Guide 5

16 Chapter 1: About DXi Advanced Reporting Date And Time Settings for DXi Advanced Reporting Resetting the Date and Time If you set the date or time on the system forward and then switch it back, the Advanced Reporting tool will not record any data between the two time points, even if you have reset the system to the current time. This occurrence happens because the recording tool does not support data going backwards. As soon as you set a future time point, the tool sees that time point as current. The tool will not recognize data until the future time is met. Example If you set the date forward by a day and then reset it back to the current day, the recording tool will not record new data until the future time (the next day in this example) is reached. From that point forward, data is recorded. DXi Advanced Reporting User s Guide 6

17 Chapter 2: Navigation Chapter 2: Navigation This chapter contains the following topics: The DXi Advanced Reporting UI 7 Logging On and Off DXi Advanced Reporting 8 DXi Advanced Reporting Features 10 Working with DXi Advanced Reporting Time Ranges 15 DXi Advanced Reporting Graph Features 18 Tips for Interpreting Performance Data 22 The DXi Advanced Reporting UI The DXi Advanced Reporting user interface (UI) provides powerful visual reporting and analysis tools, which you can use to identify potential problems with your DXi system and optimize your system's operation. Access Advanced Reporting through your DXi system, either by logging on to your system's user interface (UI) or by navigating to Advanced Reporting using the system's IP address. Once you are logged on to Advanced Reporting, you can access various reports and associated graphs, control the information that is displayed, and change the time range for which data is reported. Compare data displayed on different graphs, within the same report or between reports, to look for patterns and trends that can help you determine relationships between events. Use these discovered relationships to understand when your system is performing its best and to troubleshoot problems. DXi Advanced Reporting User s Guide 7

18 Chapter 2: Navigation Logging On and Off DXi Advanced Reporting Supported Web Browsers DXi Advanced Reporting is designed to run in any modern browser that supports the Adobe Flash Player plug-in version 10.x and higher. Browser software is not included with Advanced Reporting. You must obtain and install it separately. You must also install the correct version of the Adobe Flash Player plug-in for your operating system and browser. Advanced Reporting requires Adobe Flash Player version 10.x or higher. To download and install Flash Player, go to Note: Advanced Reporting does not support the 64-bit version of the Flash Player plug-in on Linux. Instead, use the 32-bit Flash Player plug-in and a 32-bit browser. Logging On and Off DXi Advanced Reporting Access DXi Advanced Reporting from a workstation on the same network as the DXi system for which you want to view reports. From the workstation, use a supported Web browser to log on to Advanced Reporting. Login Considerations Consider the following before logging on to Advanced Reporting. Login Types There are two types of system users: Monitors can view information on the system but cannot make changes. Administrators can view and change information on the system. In Advanced Reporting, monitors and administrators have the same functionality. Keep in mind, though, that when you log on to Advanced Reporting, you are also logging on to the DXi system. It is important to log on to Advanced Reporting with the appropriate user account. Login from Your System If you previously logged on to the system as a monitor or administrator, and the session has not timed out, you do not need to log on separately to Advanced Reporting. If you logged on as a monitor, you are automatically logged into Advanced Reporting as a monitor. If you logged on as an administrator, you are automatically logged into Advanced Reporting as an administrator. DXi Advanced Reporting User s Guide 8

19 Chapter 2: Navigation Logging On and Off DXi Advanced Reporting Passwords Passwords are limited to 15 characters. Alphanumeric characters and special characters are allowed. For information about changing the monitor or administrator password, see the User's Guide for your DXi system. The default password is password. Log on to Advanced Reporting 1. From a Web browser, do one of the following to display the DXi Advanced Reporting Login window: From your system's user interface (UI) a. Log in to your system's UI. b. Click the DXi Advanced Reporting button located below the menus. From the Web browser Navigate to the following address: Figure 2: Login Window 2. In the Login Type field, select the appropriate user type. 3. In the Password field, enter the password associated with the selected user type. 4. Click Login to display the Advanced Reporting UI. DXi Advanced Reporting User s Guide 9

20 Chapter 2: Navigation DXi Advanced Reporting Features Figure 3: DXi Advanced Reporting User Interface Overview Report Log off from Advanced Reporting 1. In the upper right corner of the UI, click. 2. From the displayed options, click Log Off to end your Advanced Reporting session. DXi Advanced Reporting Features The DXi Advanced Reporting User Interface (UI) displays performance graphs for the currently selected report. When you first log on to the UI, the Overview report displays. By default, the report shows data for the last 7 days. Review the following features of the Advanced Reporting UI. DXi Advanced Reporting User s Guide 10

21 Chapter 2: Navigation DXi Advanced Reporting Features Figure 4: DXi Advanced Reporting UI 1 Menu 4 Timeline Bar 7 Report Graphs 2 Toolbar 5 Time Range Bar 8 UI Home Page, Help, and Log Off Buttons 3 System Information Bar 6 View Controls 9 URL Reference Menu The Advanced Reporting menu includes the following options. Menu Reports View Description Use to select a report for which to view logged data. Use to show or hide the Toolbar, System Information bar, Timeline bar, Time Range bar, or View controls. By default, all items are displayed, with the exception of the Timeline. DXi Advanced Reporting User s Guide 11

22 Chapter 2: Navigation DXi Advanced Reporting Features Menu Actions Description Use to change the graph display. Update Updates the report's graphs with the latest logging information. Scroll Up Scrolls the graph order up by one graph. Scroll Down Scrolls the graph order down by one graph. Show All Legends Shows the title and legend on all report graphs. Hide All Legends Hides the title and legend on all report graphs. About Use to display version and license information for your Advanced Reporting appliance. Toolbar The Advanced Reporting Toolbar includes the following options. Note: Click the arrow to the right of the Toolbar to hide it. Click the arrow again to redisplay the Toolbar. Options Buttons Info Span Controls Update Up Down Show All Hide All Description Shows or hides the Time Range bar. Shows or hides the System Information bar. Shows or hides the Timeline. Shows or hides the View controls. Updates the report's graphs with the latest logging data. Scrolls the graph order up by one graph. Scrolls the graph order down by one graph. Shows the title and legend on all report graphs. Hides the title and legend on all report graphs. DXi Advanced Reporting User s Guide 12

23 Chapter 2: Navigation DXi Advanced Reporting Features Options Description DB Export Exports the statistical database data from which Advanced Reporting graphs are generated to a file for offline viewing. To export the statistical database a. Click DB Export to export the database. When the export is complete, the DB Export Complete dialog box displays. b. Follow one of the displayed pathways to access the export file. User Menu Displays the user type currently logged on to Advanced Reporting. To log off a. Click the User Menu. b. Click Log Off. System Information Bar The System Information bar displays the following information. Field Model Serial Number Software Version Date and Time Description The model of the DXi device for which Advanced Reporting is running, such as DXi6900. The serial number of the DXi device for which Advanced Reporting is running. The version of software on which the DXi device is running. The current date, time, and time zone of the DXi device for which Advanced Reporting is running. Timeline and Time Range Bars The Timeline and Time Range bars allow you to control the span of time on which data is reported. For more information, see Working with DXi Advanced Reporting Time Ranges. View Controls The View controls allow you to navigate through the report's graphs, and to select the information displayed for each graph. DXi Advanced Reporting User s Guide 13

24 Chapter 2: Navigation DXi Advanced Reporting Features Button Description Scrolls the graph order up by one graph. Shows the title and legend on all report graphs. Hides the title and legend on all report graphs. Scrolls the graph order down by one graph. Report Graphs Each report in Advanced Reporting is made of one or more graphs. These graphs display performance data for the selected time range. For more information, see DXi Advanced Reporting Graph Features. UI Home Page, Help, and Log Off Buttons Use the buttons located at the top right corner of the UI to do the following: Button Description Navigate to the DXi device's Home page. Access Help for Advanced Reporting. Log off from Advanced Reporting. URL Reference A link that provides a URL reference to the current report displays at the bottom of every Report window. You can copy and send this URL to a third-party, such as a coworker, who needs to access the report's information. DXi Advanced Reporting User s Guide 14

25 Chapter 2: Navigation Working with DXi Advanced Reporting Time Ranges Working with DXi Advanced Reporting Time Ranges Use the Timeline bar, Time Range bar, or Dynamic Zoom feature indxi Advanced Reporting to select the time range for which data is displayed. By default, Advanced Reporting displays data for the most recent 7 days of logging. Viewing Tips Review the following tips to understand how time-range changes affect your view. Resolution When you change the time range, Advanced Reporting automatically adjusts the resolution of performance data. The resolution is finer more granular for shorter time ranges. The resolution is coarser less granular for longer time ranges. Preset Ranges When you apply a preset time range, Advanced Reporting resizes the time range while maintaining the center of the time range. Example If you are currently viewing a one-week time range that goes from Sunday to Saturday, applying the 1d preset displays data for Wednesday, which is at the center of the weekly range. Scale Regardless of the time range being graphed, Advanced Reporting scales all logged data to use the entire width of each graph. Timeline Bar Use the Timeline bar to select preset time ranges, move the time range forward or backward in time, or shrink or expand the time range. Figure 5: Timeline Bar DXi Advanced Reporting User s Guide 15

26 Chapter 2: Navigation Working with DXi Advanced Reporting Time Ranges 1 Preset Time Ranges 2 Left Handle 3 Time Line 4 Right Handle 5 Date/ Time of Range Use the Timeline bar 1. Display the report for which to view data. 2. Adjust the time range for which to display data by doing any of the following: Assign a preset time range a. Click any of the preset time ranges located at the top of the Timeline bar. b. Double-click the Time Line to apply the preset range. Move the time range forward or backward in time a. Drag the Time Line backward or forward. b. Double-click the Time Line to apply the new range. Shrink or expand the time range a. Drag the Right Handle and Left Handle to the desired time range. b. Double-click the Time Line to apply the new range. Click reset range on the Time Range bar to adjust the time range to display the most recent seven days of logging. Time Range Bar Use the Time Range bar to select the numeric base for the data on which to report, adjust the start and end times of the time range, assign a preset time range, or adjust the time range forward or backward in time. Figure 6: Time Range Bar 1 Forward and Backward Navigation Buttons 4 Preset Time Range Buttons 7 Base Drop-Down List 2 Start and End Time Adjustment Fields 5 Preset Zoom Range Buttons 8 Reload Button 3 Total Time Being Reported 6 Reset Range Button Use the Time Range bar 1. Display the report for which to view data. 2. In the Base drop-down list, select the numeric base for the data on which to report: 1000 Bytes/KBs Tape drives, tape cartridges, and disk drives report capacities in units of 1000 bytes per kilobyte. DXi Advanced Reporting User s Guide 16

27 Chapter 2: Navigation Working with DXi Advanced Reporting Time Ranges 1024 Bytes/KBs Backup applications typically report summaries in units of 1024 bytes per kilobyte. 3. Adjust the time range by doing any of the following: Adjust start and end times a. In the Start and End fields, enter a starting and ending date and time to define the time range to display. b. Click reload to redisplay the graphs with the new time range. Assign a preset time range Click any of the following Preset Time Range buttons to quickly display data for a different time range: 1h 1 hour 4h 4 hours 12h 12 hours 1d 1 day 1w 1 week 1m 1 month 1y 1 year Assign a preset zoom factor Click any of the following to zoom in or out on the graphs by a fixed factor: x0.25 Zooms in by a quarter of the currently displayed time range. x0.5 Zooms in by half of the currently displayed time range. x2.0 Zooms out by 2 times the currently displayed time range. x4.0 Zooms out by 4 times the currently displayed time range. Adjust the time range forward or backward Click the Backward or Forward Navigation buttons to move the time range by any of the following amounts: <<< or >>> Moves the time range backward or forward an amount equal to the current time range. << or >> Moves the time range backward or forward an amount equal to one half of the current time range. < or > Moves the time range backward or forward an amount equal to one quarter of the current time range. Click reset range to adjust the time range to display the most recent seven days of logging. Dynamic Zoom Feature Use the Dynamic Zoom feature to select a part of the graph on which to see more detail. DXi Advanced Reporting User s Guide 17

28 Chapter 2: Navigation DXi Advanced Reporting Graph Features Figure 7: Dynamic Zoom Feature 1 Clear Button 2 Left Handle 3 Right Handle 4 Zoom Area Use the Dynamic Zoom feature 1. Display the report for which to view data. 2. Click on the spot of the graph on which to zoom to display selection handles. 3. Drag the Left Handle and Right Handle to adjust the area of the graph on which to zoom. 4. Double-click the selected area on which to zoom. 5. Click Clear to reset the graph to its original time range. DXi Advanced Reporting Graph Features In DXi Advanced Reporting, each report is made up of one or more graphs. Each graph displays a specific type of performance data for the selected time range, such as the Data Volume Overview, Reduction Ratio, Fibre Channel Activity, and Ethernet Activity graphs in the Overview report. Although each graph in Advanced Reporting displays a specific type of performance data, many components are shared between Advanced Reporting graphs. Review the following to gain a better understanding of graph components both shared and unique. Horizontal Axis The horizontal axis of each graph represents time, and displays the selected time range. Vertical Axis The vertical axis can vary between graphs. Often the vertical axis represents capacity or data amount, or a calculated value such as ratio, average, or percentage. DXi Advanced Reporting User s Guide 18

29 Chapter 2: Navigation DXi Advanced Reporting Graph Features Legend Each graph contains a color-coded legend. Use the legend to help in reading and interpreting the data displayed on the graph. For some graphs, the legend contains first, last, and delta values for variables within the graph. Values first last delta Descriptions The value of the variable at the start of the time range. The value of the variable at the end of the time range. The difference between the first and last values over the time range. Equation: last - first = delta Note: If a graph displays a value as nan not a number Advanced Reporting could not calculate the value. Gaps A white gap in a graph indicates an absence of data logging for a period of time. This absence can occur for the following reasons: A system reboot occurred. The system was busy. Logging was turned off. Zero Line Graphs include a zero line to show when data is being written to or read from the DXi system. Positive values above the zero line represent data being written to the system. Negative values below the zero line represent data being read from the system. DXi Advanced Reporting User s Guide 19

30 Chapter 2: Navigation DXi Advanced Reporting Graph Features Figure 8: Zero Line Example 1 Zero Line 2 Data written to the system 3 Data read from the system Stacked and Layered Graphs A single graph can display multiple variables, allowing you to view the interaction between them. Advanced Reporting uses two methods for placing multiple variables on the same graph. Layered Graphs Layered graphs compare related variables by superimposing data for two or more variables. Each variable is assigned a different color so you can easily distinguish between the variables. Example The Data Volume Overview graph depicts the data for the Before Reduction, After Reduction, and Unique Data variables using different colors. Layering these related variables lets you easily compare the amount of each type of data stored on the system. Figure 9: Layered Graph Example DXi Advanced Reporting User s Guide 20

31 Chapter 2: Navigation DXi Advanced Reporting Graph Features Stacked Graphs Stacked graphs display aggregate performance by adding the values for two or more variables to arrive at a total value. Each variable is assigned a different color so you can easily distinguish between the variables. Example The Fibre Channel Activity graph adds the values for each Fibre Channel port to reach a total value for each point in the time range. Each of the ports is assigned a different color so you can see the contribution it makes to the total value. Figure 10: Stacked Graph Example Additional Features The following additional features are shared among all graphs: Feature Drag and Drop Minimize Description To change the order of the graphs within a report, drag a graph by its title bar and move it above or below another graph. To minimize a graph, click. To restore the graph to its full size, click the graph's minimized title bar (located near the bottom of the window). Export To export a JPG or PNG image of the graph, click. Show/Hide To display or hide a graph's title and legend, click. Note: Graphs are restored to their default appearance the next time you log on to Advanced Reporting. DXi Advanced Reporting User s Guide 21

32 Chapter 2: Navigation Tips for Interpreting Performance Data Tips for Interpreting Performance Data DXi Advanced Reporting allows you to compare different types of performance data for the same time range. This comparison lets you look for patterns and trends to determine relationships between events. Review the following tips to help you interpret performance data. Using the Time Sync to Correlate Information Across Graphs When you view a report, try to correlate information between the report's graphs. Remember that all graphs in a report display the same time range and always remain in sync. So an event that happens in the center of one graph can be correlated with an event that happens in the center of another. This time sync applies to graphs in the same report, as well as to graphs in different reports. In other words, if you can draw a straight vertical line between events in two graphs, the events happened at the same time. Figure 11: Time Sync Correlation Example While this correlation does not mean that one event caused the other, if you consistently see that events in one graph happen at the same time as events in another graph, there is a strong possibility that the two types of events are related. Understanding Time Resolution Advanced Reporting displays graphs with 960 data points (pixels) along the horizontal axis. Keep in mind, though, that the logging database usually contains more than 960 data points for the selected time range. To convert the resolution of the database to the resolution of the graph, Advanced Reporting uses aggregation. In many cases, each pixel in the graph is a combination or an aggregate of multiple data DXi Advanced Reporting User s Guide 22

33 Chapter 2: Navigation Tips for Interpreting Performance Data points in the database. Depending on how many data points are aggregated to create each pixel in the graph, the resulting value can change, as described below. Example Consider a transfer on the Ethernet Activity graph that lasts for 6 seconds. In Example 1 below, the graph shows the transfer within a time range of 32 minutes (1,920 seconds). In this case, each pixel in the graph represents 2 seconds of time. As a result, the transfer takes up 3 pixels in the graph (3 two-second intervals) and displays a peak amplitude of 2.1 MB/second. Figure 12: Example 1 In Example 2, the graph shows the transfer within a time range of 128 minutes (7,680 seconds). In this case, each pixel in the graph represents 8 seconds of time. Even though the transfer is only 6 seconds long, it cannot take up to less than 1 pixel in the graph. As a result, the transfer amount is averaged over 8 seconds, resulting in a lower peak amplitude of 0.9 MB/second. Figure 13: Example 2 It's important to note that the only difference between the two examples is the time resolution. The underlying data did not change. The difference in amplitude is due to the different number of data points that Advanced Reporting aggregates when calculating the value for each pixel in the graph. Be aware of this effect as you work with graphs and time ranges. Note: Advanced Reporting always uses the finest resolution of data available in the database, with finer-grained data being available for more recent time ranges. Selecting the Base Different systems report data usage in different ways. Advanced Reporting reports data using one of the DXi Advanced Reporting User s Guide 23

34 Chapter 2: Navigation Tips for Interpreting Performance Data following base units: Base Unit Description Base 1000 Tape drives, tape cartridges, and disk drives typically report capacities in units of Base 1024 Backup devices typically report summaries in units of The difference between the two base units results in a disparity of over 10% in reported data sizes at the terabyte (TB) level. Example 27.3 tebibytes (TiB) reported at base 1024 become 30 TB when reported at base Advanced Reporting automatically selects the appropriate base unit for each DXi model so that numeric results most closely match the value displayed in the DXi remote management pages. You can change the base in which data is displayed in the Base field of the Time Range bar. See Working with DXi Advanced Reporting Time Ranges. DXi Advanced Reporting User s Guide 24

35 This chapter contains the following topics: About the Reports in DXi Advanced Reporting 26 Overview Report 28 Capacity Report 35 Capacity Detail Report 38 Capacity Delta Bytes/H and Bytes/S Reports 42 Data Reduction Report 46 CPU Load Report 48 Ethernet I/O Report 50 Fibre Channel I/O Report 51 OST Statistics Report 52 Ingest (Chargeback) Reports 60 Ingest and Delete Report 69 Space Reclamation Report 71 System Load Report 74 DXi Advanced Reporting User s Guide 25

36 About the Reports in DXi Advanced Reporting Each report in DXi Advanced Reporting is comprised of one or more graphs. Some graphs appear in more than one report. The following table lists the reports and their associated graphs available in Advanced Reporting. Note: Depending on the user authentication level, platform, or software version that you are using, some of the reports may not be available. Report Graphs Overview Data Volume Overview Reduction Ratio Ethernet Activity Fibre Channel Activity Capacity Data Volume Overview Disk Usage Before Reduction vs After Reduction After Reduction vs Unique Data Found Reduction Ratio Capacity Detail Data Volume Overview Before Reduction After Reduction Unique Data Found Allocated Disk Space Data Not Intended for Deduplication Capacity Delta Bytes/h Data Volume Overview Combined Delta in Bytes/h Before Reduction Delta in Bytes/h After Reduction Delta in Bytes/h Unique Data Found Delta in Bytes/h Allocated Disk Space Delta in Bytes/h DXi Advanced Reporting User s Guide 26

37 Report Graphs Capacity Delta Bytes/s Data Volume Overview Combined Delta in Bytes/s Before Reduction Delta in Bytes/s After Reduction Delta in Bytes/s Unique Data Found Delta in Bytes/s Allocated Disk Space Delta in Bytes/s Data Reduction Data Volume Overview Reduction Ratio Deduplication Ratio Compression Ratio CPU Load CPU Load Average CPU Stats in % Ethernet I/O Ethernet Activity ethn Activity Fibre Channel I/O Fibre Channel Activity FC n Activity OST Statistics Combined o o o o o o o o OST Statistics Accent OST Statistics Ethernet OST Accelerator Ingest OST Accelerator Ingest Data Bytes OST Accelerator Ingest Unique Bytes OST Accelerator Ingest Synthetic Bytes OST Accelerator Savings OST Accelerator Data Change Read OST Accent or Accelerator Node n Per Partition Ingest (Chargeback) Export Partition Chargeback comma separated value (CSV) file Total Per Partition Ingest Capacity and Ingest Per Partition (1 - n) Capacity and Ingest DXi Advanced Reporting User s Guide 27

38 Overview Report Report Graphs Per Share Ingest (Chargeback) Export Partition Chargeback CSV file Total Per Share Ingest Capacity and Ingest Per Share (1 - n) Capacity and Ingest Replication Ingest (Chargeback) Export Replication Chargeback CSV file Total Per Replication Capacity and Ingest Per Share (1 - n) Capacity and Ingest Ingest & Delete Ingest and Deletions Space Reclamation Space Reclamation Progress Space Reclamation Bytes Space Reclamation/Compaction System Load CPU Load Average CPU Stats in % Ethernet Activity Fibre Channel Activity Overview Report The Overview report displays key statistics for your DXi system, including the amount of data processed by the system, the reduction ratio, and the levels of I/O activity. This report contains the following graphs: Data Volume Overview Graph Reduction Ratio Graph Ethernet Activity Graph Fibre Channel Activity Graph Data Volume Overview Graph The Data Volume Overview graph displays information about the amount of data processed by the system. Use this graph to evaluate the overall health of the system, as well as to quickly identify whether your DXi system is full or nearing full capacity. Review the following variables of the Data Volume Overview graph. DXi Advanced Reporting User s Guide 28

39 Overview Report Figure 14: Data Volume Overview Graph Legend Displays the first, last, and delta values for each variable displayed on the graph. In addition, it displays the first and last ratios for the Data Reduction value, which is the amount of data that was reduced on the system during the selected time range. Before Reduction (dark blue) Displays the total amount of data ingested by the system. Use this information to understand how much data the system is processing. After Reduction (dark green) Displays the amount of ingested data remaining on the system after the data has been deduplicated and compressed. Unique Data (light green) Displays the amount of ingested data remaining on the system after the data has been deduplicated and redundant data has been identified, but before the ingested data is compressed. Use this information to view the amount of deduplicated data stored on the system. Used Disk Space (light blue) Displays the amount of space that is being consumed by active data. The used disk space does not include space allocated to be reclaimed for new backup data. DXi Advanced Reporting User s Guide 29

40 Overview Report Use this information to see the amount of used system capacity. Allocated Disk Space (blue-gray) Displays the total amount of allocated disk space. In addition, this variable includes disk space that is free to be reclaimed for storing new backup data. The types of data for which disk space is allocated include the following: Deduplicated data Non-deduplicated data Expired data System metadata Use this information to see the amount of allocated and free system capacity. Disk Capacity (black) Displays the overall capacity of the system. Space Reclamation A pink bar at the top of the graph indicates that space reclamation is in progress. Space reclamation is source intensive and can affect the rate at which the system deduplicates data or performs namespace replication. Average Transfer Rate The average transfer rate, represented by a thin horizontal black line, displays the average data transfer rate for the selected time range. Reduction Ratio Graph The Reduction Ratio graph displays the data reduction factor for the DXi system. Use this graph to evaluate the effectiveness of data reduction. When viewing data on the Reduction Ratio graph, keep in mind that a higher reduction ratio indicates less space is being used to store the same amount of ingested data. Note: The reduction ratio may vary greatly during space reclamation and during incoming replications because these activities affect the Before Reduction amounts. Review the following variables of the graph. DXi Advanced Reporting User s Guide 30

41 Overview Report Figure 15: Reduction Ratio Graph Total Reduction Factor (dark blue) Displays the factor when the Before Reduction value is divided by the After Reduction value. Note: This value corresponds to the Total Reduction Ratio value on the Home page of the DXi remote management pages. View the Before Reduction and After Reduction values on the Data Volume Overview Graph. Deduplication (light blue) Displays the reduction factor for deduplication. This factor is calculated by dividing the Before Reduction value by the Unique Data value. Note: View the Before Reduction and Unique Data values on the Data Volume Overview Graph. Compression (green) Displays the reduction factor for compression. This factor is calculated by dividing the Unique Data value by the After Reduction value. Note: View the Unique Data and After Reduction values on the Data Volume Overview Graph. Ethernet Activity Graph The Ethernet Activity graph displays the amount of data passing through all Ethernet ports in the DXi system. Use this graph to monitor writes to and reads from the system using the Ethernet ports. Review the following variables of the Ethernet Activity graph. DXi Advanced Reporting User s Guide 31

42 Overview Report Figure 16: Ethernet Activity Graph Ethernet Ports The graph assigns one of four colors to each Ethernet port. It repeats the color assignment cyclically, as needed. Example In the image above, the graph displays data for eight different Ethernet ports. It assigns colors to the ports cyclically, as follows, repeating the colors every four ports: Eth0 dark blue Eth1 light blue Eth2 dark green Eth3 light green Eth4 dark blue Eth5 light blue Eth6 dark green Eth7 light green In addition, the graph displays alerts in yellow and red tones. Write and Read Activity The legend displays the amount of data being written to and read from the system. The graph displays this DXi Advanced Reporting User s Guide 32

43 Overview Report activity as follows: Target replication to the system displays as write activity, which is activity above the zero line. Source replication from the system displays as read activity, which is activity below the zero line. NAS backup/restore operations and management activity display as both write and read activity. Bonded ports with a balanced traffic load display as symmetrical write and read activity. Space Reclamation A pink bar at the top of the graph indicates that space reclamation is in progress. Space reclamation is source intensive and can affect the rate at which the system deduplicates data or performs namespace replication. Average Transfer Rate The average transfer rate, represented by a thin horizontal black line, displays the average data transfer rate for the selected time range. Fibre Channel Activity Graph The Fibre Channel Activity graph displays the amount of data passing through all Fibre Channel ports in the DXi system. Use this graph to monitor writes to and reads from the system using the Fibre Channel ports. Review the following variables of the Fibre Channel Activity graph. Figure 17: Fibre Channel Activity Graph DXi Advanced Reporting User s Guide 33

44 Overview Report Fibre Channel Ports The graph assigns one of four colors to each Fibre Channel port. It repeats the color assignment cyclically, as needed. Example In the image above, the graph displays data for six different Fibre Channel ports. It assigns colors to the ports cyclically, as follows, repeating the colors every four ports: FC0 dark blue FC1 light blue FC2 dark green FC3 light green FC4 dark blue FC5 light blue In addition, the graph displays alerts in yellow and red tones. Write and Read Activity The legend displays the amount of data being written to and read from the system. The graph displays this activity as follows: Write activity, which is activity above the zero line, occurs during backups. o o A regular backup schedule results in repeating patterns. A high amplitude on the left edge of an activity block indicates a large number of client backups starting simultaneously. Read activity, which is activity below the zero line, occurs during VTL restore operations. Symmetrical read and write activity indicates Tivoli Storage Manager (TSM) tape reclamation. LIP, Reset, and Abort Activity Activity displays as follows: A red line at the top of the graph indicates that a Fibre Channel Loop Initialization Protocol (LIP) or reset occurred. An orange line at the top of the graph indicates that a Fibre Channel abort occurred. Average Transfer Rate The average transfer rate, represented by a thin horizontal black line, displays the average data transfer rate DXi Advanced Reporting User s Guide 34

45 Capacity Report for the selected time range. Capacity Report The Capacity report displays information about used storage space, including both processed data statistics and data reduction statistics. The report contains the following graphs: Data Volume Overview Graph Disk Usage Graph Before Reduction vs. After Reduction Graph After Reduction Vs. Unique Data Found Graph Reduction Ratio Graph Disk Usage Graph The Disk Usage graph compares the amount of data stored on the DXi system after reduction, which includes deduplication and compression, to the allocated disk space on the system. Use the graph to monitor the amount of disk space that is made available during space reclamation. Review the following variables of the Disk Usage graph. Figure 18: Disk Usage Graph DXi Advanced Reporting User s Guide 35

46 Capacity Report Data Usage Displays the first, last, and delta values for the variables displayed on the graph. Allocated Disk Space (light blue) Displays the total amount of allocated disk space on the system. The value also includes disk space that is free to be reclaimed for storing new backup data. No Deduplication (dark blue) Displays the amount of data that is not intended for deduplication. This value includes the amount of disk space used by shares or partitions that are not configured for deduplication. After Reduction (dark green) Displays the amount of data that remains after ingested data is deduplicated and compressed. This value is the amount of data consumed by the blockpool. Use this information to see the amount of deduplicated, compressed data stored on the system. Reclaimable Space (light green) Displays the amount of disk space available for storing new backup data. This newly freed space contained data that expired or was deleted from the system. Reclaimable Space for Shares and Partitions For non-deduplicated shares and partitions, the system can automatically free reclaimable space when all other free space has been allocated. DXi versions 2.3 and newer can automatically free reclaimable space for deduplicated data on shares and partitions within the blockpool. This process leaves the free space available for subsequent deduplicated data on shares and partitions within the blockpool. Before Reduction vs. After Reduction Graph The Before Reduction vs. After Reduction graph compares the amount of data ingested by the DXi system to the amount of unique and compressed data stored on the system. Use this graph to evaluate the effectiveness of data reduction in the system. Review the following varaibles of the Before Reduction vs. After Reduction graph. DXi Advanced Reporting User s Guide 36

47 Capacity Report Figure 19: Before Reduction vs. After Reduction Graph Before Reduction (dark blue) Displays the amount of data ingested by the system. This value increases when the system is actively ingesting data. Unique Data (light green) Displays the amount of ingested data remaining on the system after it has been deduplicated and its redundant data has been identified, but before the ingested data is compressed. The Unique Data value increases more slowly than the Before Reduction value as time goes by, less of the data ingested by the system is unique data. After Reduction (dark green) Displays the amount of data that remains on the system after ingested data has been deduplicated and compressed. The After Reduction value represents the amount of data consumed by the blockpool. Use this information to see the amount of deduplicated, compressed data stored on the system. After Reduction Vs. Unique Data Found Graph The After Reduction vs. Unique Data found graph compares the amount of unique data on your DXi system before and after compression. Use this graph to evaluate the effectiveness of data compression on your system. Review the following variables of the After Reduction vs. Unique Data found graph. DXi Advanced Reporting User s Guide 37

48 Capacity Detail Report Figure 20: After Reduction vs. Unique Data found Graph After Reduction (dark green) Displays the amount of data remaining on the system after ingested data is both deduplicated and compressed. Unique Data (light green) Displays the amount of data that remains on the system after ingested data is deduplicated and its redundant data has been identified, but before the ingested data is compressed. Capacity Detail Report The Capacity Detail report displays information about used storage space, including the amount of data before and after reduction. This report contains the following graphs: Data Volume Overview Graph Before Reduction, After Reduction, and Unique Data Found Graphs Allocated Disk Space Graph Data Not Intended for Deduplication Graph DXi Advanced Reporting User s Guide 38

49 Capacity Detail Report Before Reduction, After Reduction, and Unique Data Found Graphs For the Capacity Detail report, the Before Reduction, After Reduction, and Unique Data found variables are broken out into their own graphs for more detailed viewing. Before Reduction Graph Displays the total amount of data ingested by the DXi system. Use the graph to see the amount of data that the system is processing.the graph contains the following variables. Figure 21: Before Reduction Graph Trace Time Displays the date and time range for which data is being displayed on the graph. In addition, the graph displays the total number of seconds on which statistics are being reported. Data Ingested The legend displays the first, last, and delta values for the amount of data ingested by the system, along with the average amount of data ingested by the system for the time range. After Reduction Graph Displays the amount of data that remains on the DXi system after ingested data is both deduplicated and compressed. Use the After Reduction graph to see the amount of deduplicated, compressed data stored on the system. DXi Advanced Reporting User s Guide 39

50 Capacity Detail Report Figure 22: After Reduction Graph Unique Data found Graph Displays the amount of data that remains on the DXi system after ingested data is deduplicated and its redundant data has been identified, but before the ingested data is compressed. Use the Unique Data found graph to see the amount of deduplicated data stored on the system. Figure 23: Unique Data found Graph Allocated Disk Space Graph The Allocated Disk Space graph displays the amount of disk space being used to store data on the DXi system. Use this graph to see how much active and reclaimable data is allocated to the system's disk space. Review the following variables of the Allocated Disk Space graph. DXi Advanced Reporting User s Guide 40

51 Capacity Detail Report Figure 24: Allocated Disk Space Graph Allocated Disk Space (light blue) Displays the total amount of allocated disk space. This value includes disk space that is free to be reclaimed for storing new backup data. Critical Disk Space (red) Displays the level of disk usage at which allocated disk space is critically low and ingest is stopped. Note: The Critical Disk Space value may not be visible if it lies above the top of the y-axis. Disk Capacity (black) Displays the overall capacity of the system. Data Not Intended for Deduplication Graph The Data not intended for deduplication graph displays the amount of disk space on the DXi system used by data on shares or partitions that do not have deduplication enabled. This value is the sum of the UserDataSize values for all non-deduplicated shares or partitions. DXi Advanced Reporting User s Guide 41

52 Capacity Delta Bytes/H and Bytes/S Reports Figure 25: Data not intended for deduplication Graph Capacity Delta Bytes/H and Bytes/S Reports The Capacity Delta reports display changes in the amount of data stored on the DXi system. The reports share the same graphs, but display amounts in either bytes per hour or bytes per second. For purposes of this document, screen shots for the Capacity delta reports are displayed in bytes per hour. The reports contain the following graphs: Data Volume Overview Graph Combined Delta in Bytes/H and Bytes/S Graphs Before Reduction, After Reduction, and Unique Data Found Graphs (Delta in Bytes/H and Bytes/S) Allocated Disk Space Delta in Bytes/H or Bytes/S Combined Delta in Bytes/H and Bytes/S Graphs The Combined delta in Bytes/h and Combined delta in Bytes/s graphs display changes for Before Reduction, Unique Data, and After Reduction variables in bytes per hour or bytes per second. Use these graphs to see increases and decreases in total amounts of data stored on the DXi system. Review the following variables of the Combined delta in Bytes/h and Combined delta in Bytes/s graphs. DXi Advanced Reporting User s Guide 42

53 Capacity Delta Bytes/H and Bytes/S Reports Figure 26: Combined delta in Bytes/h Graph Zero Line Displays values in relation to the zero line as follows: Values above the zero line indicate an increase in stored data. Values below the zero line indicate a decrease in stored data. Before Reduction (blue) Displays increases and decreases in the amount of ingested not deduplicated, nor compressed data stored on the system. Unique Data (light green) Displays increases and decreases in the amount of deduplicated data stored on the system. After Reduction (dark green) Displays increases and decreases in the amount of deduplicated, compressed data stored on the system. Before Reduction, After Reduction, and Unique Data Found Graphs (Delta in Bytes/H and Bytes/S) For the Capacity delta Bytes/h and the Capacity delta Bytes/s reports, the Before Reduction, After Reduction, and Unique Data found variables are broken into their own graphs for more detailed viewing. DXi Advanced Reporting User s Guide 43

54 Capacity Delta Bytes/H and Bytes/S Reports Tips Keep the following in mind when viewing these graphs: Values above the zero line indicate an increase in data stored. Values below the zero line indicate a decrease in data stored. Before Reduction Delta in Bytes/h or Bytes/s Graphs These graphs display increases and decreases in the amount of ingested not deduplicated, nor compressed data stored on the system. In addition, the legend in each graph shows the average amount of data ingested per hour or per second for the displayed time range. Figure 27: Before Reduction delta in Bytes/h Graph After Reduction Delta in Bytes/h or Bytes/s Graphs These graphs display increases and decreases in the amount of deduplicated, compressed data stored on the system. In addition, the legend in each graph shows the average amount of deduplicated and compressed data ingested per hour or per second for the displayed time range. Figure 28: After Reduction delta in Bytes/h Graph DXi Advanced Reporting User s Guide 44

55 Capacity Delta Bytes/H and Bytes/S Reports Unique Data Found Delta in Bytes/h or Bytes/s Graphs These graphs display increases and decreases in the amount of deduplicated data stored on the system. In addition, the legend in each graph shows the average amount of unique data ingested per hour or per second for the displayed time range. Figure 29: Unique Data found delta in Bytes/h Graph Allocated Disk Space Delta in Bytes/H or Bytes/S The Allocated Disk Space delta in Bytes/h and Allocated Disk Space delta in Bytes/s graphs display changes for Allocated Disk Space values in bytes per hour or bytes per second. Use these graphs to see increases and decreases in the amount disk capacity used to store data. Review the following variables of these graphs. Figure 30: Allocated Disk Space delta in Bytes/h Graph Types of Data The following types of data can be stored on allocated disk space: DXi Advanced Reporting User s Guide 45

56 Data Reduction Report Deduplicated data Non-deduplicated data System metadata Note: This variable does not include disk space that is available for reuse, which includes expired or deleted data. Allocated Amounts Amounts are displayed as follows: Values above the zero line indicate an increase in stored data. Values below the zero line indicate a decrease in stored data. Data Reduction Report The Data Reduction report displays detailed data reduction statistics for the DXi system. The report contains the following graphs: Data Volume Overview Graph Reduction Ratio Graph Deduplication Ratio and Compression Ratio Graphs Deduplication Ratio And Compression Ratio Graphs The Deduplication Ratio and Compression Ratio graphs display the amount of data reduction that has been achieved on the DXi system, as follows. Deduplication Ratio Graph This graph displays the deduplication factor for the system. This factor is calculated by dividing the Before Reduction value by the Unique Data value. See the Data Volume Overview Graph. A higher deduplication ratio indicates less space is being used to store the same amount of raw data on the system. Use the Deduplication Ratio graph to evaluate the effectiveness of deduplication in the system. DXi Advanced Reporting User s Guide 46

57 Data Reduction Report Note: The deduplication ratio can vary widely during both space reclamation and incoming replication. These activities affect the Before Reduction amounts, which in turn, affects the deduplication ratio. Figure 31: Deduplication Ratio Graph Compression Ratio Graph This graph displays the compression factor for the system. This factor is calculated by dividing the Unique Data value by the After Reduction value. See the Data Volume Overview Graph. A higher compression ratio indicates less space is being used to store the same amount of deduplicated data on the system. Use the Compression Ratio graph to evaluate the contribution of compression to overall data reduction and space savings for the system. Note: The compression ratio can vary widely during space reclamation or during incoming replication. These activities affect the Before Reduction amounts, which in turn, affects the compression ratio. Figure 32: Compression Ratio Graph DXi Advanced Reporting User s Guide 47

58 CPU Load Report CPU Load Report The CPU Load report displays information about the usage of CPU resources for the DXi system. The report contains the following graphs: CPU Load Average Graph CPU Stats in % Graph CPU Load Average Graph The CPU Load Average graph displays the one-minute load average for the system. Use this graph to determine whether the system has adequate CPU resources. Review the following information for help in reading the graph. Figure 33: CPU Load Average Graph Load Average Shows the average number of processes running or waiting to run on a CPU over a one-minute period. A load average higher than the number of system CPU cores indicates that the system is CPU limited. Example A typical DXi system has 4 CPUs. For such systems, a load average of greater than 4 indicates that some processes waited for an available CPU before running. In contrast, a load average of less than 4 indicates that CPUs were immediately available for all processes to run. Note: A CPU load that is higher than 15 indicates that the system is busy. In this case, performance may be negatively affected. DXi Advanced Reporting User s Guide 48

59 CPU Load Report CPU Stats in % Graph The CPU stats in % graph displays the relative CPU usage for the following seven process categories. Use this graph to see how CPU resources are allocated among these categories. Figure 34: CPU stats in % Graph Process Categories The following table lists the process categories displayed on the CPU stats in % graph: Process Category iowait (red) irq (gold) softrq (brown) system (green) nice (black) user (blue) idle (not shown) Description The CPU is waiting for an I/O device, such as a disk, to respond. The CPU is handling an interrupt request related to I/O, such as network, Fibre Channel, disk, keyboard, or serial port activity. The CPU is handling a high-level I/O task, such as timer interrupts or packets in the TCP/IP stack. The CPU is handling a kernel process, such as filesystem operations related to the StorNext or blocklet filesystems. The CPU is handling processes that have lower priority, such as background processes. The CPU is handling processes that are not owned by the kernel, such as deduplication, space management, and replication activities. The CPU is not handling any of the other process categories. DXi Advanced Reporting User s Guide 49

60 Ethernet I/O Report Consideration When viewing statistics for the process categories in the CPU stats in % graph, keep in mind that the amount of CPU activity consumed by each process category is expressed as a percentage. The percentages include the value for idle, which is not shown in the graph, and add up to 100%. Ethernet I/O Report The Ethernet I/O report displays detailed information about the amount of data passing through the Ethernet ports in the DXi system. The report contains the following graphs: Ethernet Activity Graph Ethn Activity Graph Ethn Activity Graph The ethn Activity graph displays the amount of data passing through the different Ethernet ports on your DXi system. Use this graph to monitor writes to and reads from the system using the different Ethernet ports. Review the following variables of the ethn Activity graph. Figure 35: ethn Activity Graph Write and Read Activity The graph displays the amount of data being written to and read from the system, as follows: DXi Advanced Reporting User s Guide 50

61 Fibre Channel I/O Report Target replication to the system displays as write activity, which is activity above the zero line. Source replication from the system displays as read activity, which is activity below the zero line. NAS backup/restore operations and management activity display as both write and read activity. Space Reclamation A pink bar at the top of the graph indicates that space reclamation is in progress. Space reclamation is source intensive and can affect the rate at which the system deduplicates data or performs namespace replication. Average Transfer Rate The average transfer rate, represented by a thin horizontal black line, displays the average data transfer rate for the selected time range. Fibre Channel I/O Report The Fibre Channel I/O report displays detailed information about the amount of data passing through the Fibre Channel ports on the DXi system. The report contains the following graphs: Fibre Channel Activity Graph FCn Activity Graph FCn Activity Graph The FCn Activity graph displays the amount of data passing through the different Fibre Channel ports on your DXi system. Use this graph to monitor writes to and reads from the system using the different Fibre Channel ports. Review the following variables of the FCn Activity graph. DXi Advanced Reporting User s Guide 51

62 OST Statistics Report Figure 36: FCn Activity Graph Write and Read Activity The graph displays the amount of data being written to and read from the system, as follows: Write activity, which is activity above the zero line, occurs during backups. o o A regular backup schedule results in repeating patterns. A high amplitude on the left edge of an activity block indicates a large number of client backups starting simultaneously. Read activity, which is activity below the zero line, occurs during VTL restore operations. Average Transfer Rate The average transfer rate, represented by a thin horizontal black line, displays the average data transfer rate for the selected time range. OST Statistics Report Use the OST Statistics report to understand the network bandwidth savings and performance benefits you are achieving when either DXi Accent software or NetBackup Accelerator is enabled to enhance your backups. Note: You cannot use Accent if you are using NetBackup Accelerator or Optimized Synthetic Backups. If you are using Accelerator, make sure that Accent is not enabled. For more information about using NetBackup Accelerator, see the DXi-Series Configuration and Best Practices Guide for NetBackup from Symantec ( ). DXi Advanced Reporting User s Guide 52

63 OST Statistics Report DXi Accent DXi Accent software reduces network bandwidth requirements by distributing deduplication between the backup server and DXi systems. Only unique and compressed data is sent over the network. NetBackup Accelerator NetBackup Accelerator reduces network bandwidth requirements, while also reducing I/O at the DXi device. It achieves these reductions by identifying changed blocks of data on the client machine, and then sending only the changed data from the client to the system. The system then synthesizes the changed data with existing blocks of data. Note: NetBackup Accelerator is available for DXi versions 3.1 and higher. Workflow Review the following workflow to gain a better understand of how Netback Accelerator functions. a. The Accelerator Changed Block Tracking (CBT) agent exists on the client machine. It identifies and sends only the changed blocks of data as ingest data bytes to the system through the NetBackup Media Server. b. When a changed block of data arrives at the NetBackup Media Server, the Accelerator plugin creates an OST file from that block. The Netbackup Media server then sends the OST file as ingest data bytes to the system. c. The system reads synthetic data from its disk to be merged with the arriving ingest data bytes. Merging this data creates a synthesized image file. The system then further deduplicates the synthesized image file and writes only the changed data to the appropriate disk as unique data bytes. DXi Advanced Reporting User s Guide 53

64 OST Statistics Report Figure 37: Accelerator Workflow The report contains the following graphs: OST Statistics Accent Graph OST Statistics Ethernet Graph OST Statistics Accelerator Graphs OST Accent or Accelerator Node n Graph OST Statistics Accent Graph The OST Statistics Accent graph displays the bandwidth savings and performance benefits you are achieving with DXi Accent. Use this graph to understand the bandwidth savings achieved by the Accent feature. Review the following variables on the OST Statistics Accent graph. Note: This graph only shows data when Accent is enabled. DXi Advanced Reporting User s Guide 54

65 OST Statistics Report Figure 38: OST Statistics Accent Graph Inline (Accent) (blue) Displays data arriving at the DXi device from an Accent-enabled OST server. Compare the Inline (Accent) variable to the Ethernet variable to see the amount of network bandwidth savings that Accent is achieving. In addition, you can compare the rate shown by the Inline (Accent) variable to the overall performance of the DXi system in the Data Volume Overview graph. Ethernet (green) Displays the data arriving at the device via Ethernet. Accent Enabled Tick marks at the top of the graph indicate whether Accent is enabled: Blue Accent is enabled for the system. Green Accent is not enabled for the system. OST Statistics Ethernet Graph The OST Statistics Ethernet graph displays the amount of data being backed up to the DXi system through OST servers. Use the graph to compare the amount of data being processed, and the performance of OST servers, to the overall values in the Data Volume Overview graph. Review the following variables of the OST Statistics Ethernet graph. Note: If DXi Accent is enabled, the OST Statistics Ethernet graph will not display data. DXi Advanced Reporting User s Guide 55

66 OST Statistics Report Figure 39: OST Statistics Ethernet Graph Write and Read Activity The graph displays the amount of data being written to and read from the system, as follows: Target replication to the system from OST servers displays as write activity, which is activity above the zero line. Source replication from the system through OST servers displays as read activity, which is activity below the zero line. NAS backup/restore operations and management activity display as both write and read activity. OST Statistics Accelerator Graphs Use the OST Statistics Accelerator graphs to understand the network bandwidth savings and performance benefits that you are achieving when NetBackup Accelerator is enabled to enhance your backups. These graphs consist of the following. OST Accelerator Ingest Displays the following breakdown of data: Ingest Synth Bytes (light blue) Displays the amount of data being read from the DXi system to be synthesized with Ingest Data Bytes arriving at the DXi device from the client. Ingest Data Bytes (dark blue) Displays the total amount of data sent to the device for backup after Accelerator identifies, optimizes, and sends only the changed data blocks to the device. DXi Advanced Reporting User s Guide 56

67 OST Statistics Report Ingest Unique Bytes (green) Displays the amount of data from the synthesized image file that is saved on disk after deduplication and compression. Figure 40: OST Accelerator Ingest Graph OST Accelerator Ingest Data Bytes Displays the total amount of data sent to the device for backup after Accelerator identifies, optimizes, and sends only the changed data blocks to the device. Figure 41: OST Accelerator Ingest Data Bytes Graph OST Accelerator Ingest Unique Bytes Displays the amount of data from the synthesized image file that is saved on disk after deduplication and compression. DXi Advanced Reporting User s Guide 57

68 OST Statistics Report Figure 42: OST Accelerator Ingest Unique Bytes OST Accelerator Ingest Synthetic Bytes Displays the amount of data being read from the system to be synthesized with ingest data bytes arriving at the device from the client. Figure 43: OST Accelerator Ingest Synthetic Bytes OST Accelerator Savings Displays the savings achieved through Accelerator CBT. Total savings are calculated using the following equation: 1 - (Ingest Data Bytes) / (Ingest Data Bytes + Synthetic Bytes) Example a. The client machine sends 50 GB of data (ingest data bytes) to the device. b. The system reads 950 GB of data (synthetic data bytes) from the disk, and then merges the 950 GB with the 50 GB to create a 1 TB image file. DXi Advanced Reporting User s Guide 58

69 OST Statistics Report c. The system then writes only the 50 GB of unique data (unique data bytes) to disk. The savings achieved by Accelerator is 95%: 1 - (50 GB) / (50 GB GB) = 95% savings Figure 44: OST Accelerator Savings Graph OST Accelerator Data Change Rate Displays the percentage of ingest data bytes that have been merged with synthetic data bytes on the device. Figure 45: OST Accelerator Data Change Rate OST Accent or Accelerator Node n Graph The OST Node n graph displays the following information. DXi Advanced Reporting User s Guide 59

70 Ingest (Chargeback) Reports OST Accent Node n Displays the bandwidth savings and performance benefits you are achieving with each Accent node. Compare the Inline (Accent) variable to the Ethernet variable to see the amount of network bandwidth savings that Accent is achieving. You can compare the Inline (Accent) rate to the overall performance of the DXi system in the Data Volume Overview graph. For more information, see OST Statistics Accent Graph. Note: This graph only shows data when Accent is enabled. OST Accelerator Node n For Accelerator-enabled OST servers, the Accelerator graphs display for each Accelerator node. Use these graphs as you do for the Combined Report. For more information, see OST Statistics Accelerator Graphs. Note: These graphs only show data when Accelerator is enabled. Ingest (Chargeback) Reports Ingest (Chargeback) reports provide an estimate of the amount of disk space that a source occupies on the DXi device. You can use this estimate to determine how much to charge a source for storage space during a specified time range. This chargeback estimate assumes that only one source occupies a partition or share on the device. Example You back up data for several customers. Instead of requiring the DXi device for each customer, you can assign separate partitions or shares on the device to each customer. You can then charge customers based on the amount of space they use within their assigned partitions or shares for a given period of time. Considerations When viewing chargeback data, keep the following in mind: Reporting Intervals Advanced Reporting reports chargeback in 1-minute or 5-minute intervals, causing the display to lag by DXi Advanced Reporting User s Guide 60

71 Ingest (Chargeback) Reports 1 or 5 minutes. Hold your cursor over the graph to see a tooltip describing how timing can impact data in the graph. In addition, if a replication starts and completes in a single reporting interval, ingest data is not displayed on the graph or legend. Rounding and Granularity Changes in rounding and granularity can cause small differences in the displayed values within the graphs and summaries, as well as in the comma separated values (CSV) file. Changing the amount of time that you are viewing could cause small differences in the graph summary values, as well. This behavior is normal. Maximum Number of Partitions or Shares Advanced Reporting accepts and retains values for 256 ingest partitions or shares, and ignores statistics for partitions or shares beyond this maximum. If this maximum is exceeded, Advanced Reporting displays a one-time per boot log message. Time Intervals We do not recommend using chargeback reporting for short time intervals. Because of the methods for estimating chargeback statistics, chargeback reporting yields the best results when the time span is greater than 7 days. Per Partition Ingest Report and Per Share Ingest Report The Per Partition Ingest report and Per Share Ingest report display the same ingest information, with the exception of the type of variable on which they are reporting either a partition or a share. A partition refers to a container of data on a device, and includes both VTL partitions and cartridge-based replication partitions. A share refers to a container of data on a device, and includes the following: o o o o o CIFS share NFS share OST (the container is the storage server) Directory/File-based replication target share Replication snapshots on a target These reports contain graphs that display both the total amounts of ingested data on a system, and the amounts of ingested data in individual partitions or shares. In addition, you can export a Chargeback Ingest comma separated value (CSV) file from the reports to view a breakdown of the report's statistics. Replication Ingest Report The Replication Ingest report displays the amounts of data coming into the system indirectly through DXi Advanced Reporting User s Guide 61

72 Ingest (Chargeback) Reports replication. This replication ingest data can include OST optimized duplication data. Chargeback for replication tracks the following amounts of data within a share or partition being replicated to the system: Ingested data Compressed data Deduplicated data Protected data This report contains graphs that display both the total amounts of ingested replicated data on the system, and the amounts of data in individual partitions or shares sent to the system for replication. In addition, you can export a Chargeback Ingest CSV file from the report to view a breakdown of the report's statistics. Note: The Replication Ingest report's graphs display the same interface and data sets as the Per Partition Ingest report and Per Share Ingest report. Chargeback Graphs Review the following topics for more information about the Ingest (Chargeback) reports and graphs. Keep in mind that all three reports use the same data sets and interface. Ingest (Chargeback) Capacity Graphs Ingest (Chargeback) Ingest Graphs Exporting a Chargeback Ingest File Ingest (Chargeback) Capacity Graphs The Capacity graphs display the amount of data sent to the DXi system for backup or replication from its sources. Capacity graphs consist of two types of graphs, which display the same variables. Note: For the purpose of this document, screen shots are of the Per Partition Ingest report. All three reports use the same data sets and interface. t-total Capacity Displays the total amount of data sent to the system for backup or replication from all sources during the selected time range. DXi Advanced Reporting User s Guide 62

73 Ingest (Chargeback) Reports Figure 46: t-total Capacity Graph Partition/Share <name> Capacity Shows the amount of data sent to a single partition or share on the device for backup, or the amount of data within a partition or share sent to the device for replication. Figure 47: Partition <name> Capacity graph Variables The Capacity graphs display the following information for the type of data total capacity or per partition/share capacity on which statistics are being reported: User Data Size The graph displays one of the following: The total amount of data coming into the system for backup or replication from all sources for each minute during the selected time range. DXi Advanced Reporting User s Guide 63

74 Ingest (Chargeback) Reports The amount of data coming into a single partition or share for backup for each minute during the selected time range. The amount of data within a partition or share being replicated to the device for each minute during the selected time range. First, Last, and Delta Values The graph's legend shows the first and last data points for the selected time range, and the difference between the two points. Note: Capacity displayed for the last minute of the graph corresponds to the UserDataSize value in the exported Chargeback Ingest comma separated value (CSV) file. See Exporting a Chargeback Ingest File. Ingest (Chargeback) Ingest Graphs The Ingest graphs display the amount of data ingested by the DXi system. Ingest graphs consist of two types, which display the same variables. Note: For the purpose of this document, screen shots are of the Per Partition Ingest report. All three reports use the same data sets and interface. t-total Ingest Displays the total amount of data ingested by the system for the selected time range. Figure 48: t-total Ingest Graph DXi Advanced Reporting User s Guide 64

75 Ingest (Chargeback) Reports Partition/Share <name> Ingest Displays the amount of data ingested in a single partition or share on the device for the selected time range, or the amount of data within a partition or share being replicated to and ingested by the system for the selected time range. Figure 49: Partition <name> Ingest Graph Variables The Ingest graphs display the following information for the type of data total ingest or per partition/share ingest on which statistics are being reported: InputBytes (dark blue) Displays data ingested prior to reduction or compression. UniqueBytesPreCompression (light green) Displays data ingested after deduplication. UniqueBytesPostCompression (dark green) Displays data ingested after both compression and deduplication. Note: The totals displayed in the graph's legend correspond to the values with the same names in the exported Chargeback Ingest comma separated value (CSV) file. See Exporting a Chargeback Ingest File. Exporting a Chargeback Ingest File You can export a Chargeback Ingest comma separated value (CSV) file to view a breakdown of ingested data statistics for the DXi device and its partitions or shares. DXi Advanced Reporting User s Guide 65

76 Ingest (Chargeback) Reports CSV File Name When you download a Chargeback Ingest CSV file, the system names the file using a combination of the system's serial number and the start time and end time of the selected time period. This naming convention is shown in the following example of a Chargeback Partition Ingest CSV file. Export a Chargeback Ingest CSV file 1. Depending on the type of file to export, do one of the following: From the Reports > Per Partition Ingest menu, select Export Partition Chargeback to download the CSV file. From the Reports > Per Share Ingest menu, select Export Share Chargeback to download the CSV file. From the Reports > Replication Ingest menu, select Export Replication Chargeback to download the CSV file. 2. In the File Received dialog box, click OK to save the CSV file. Figure 50: File Received Dialog Box 3. Browse to the location to which to save the CSV file, rename it as needed, and click Save to download and save the CSV file. Chargeback Ingest File Contents The Chargeback Ingest CSV file contains the following information. DXi Advanced Reporting User s Guide 66

77 Ingest (Chargeback) Reports Field Hostname SystemSerialNumber Start End Name Description The system's hostname. The system's serial number. The start time of the selected time range. The end time of the selected time range. For Partition or Share Chargeback Ingest files The name of the partition (P) or share (S) receiving backup data, as configured in the device and as shown in the DXi GUI for the ingest CSV. For Replication Chargeback Ingest files The name of the partition (P) or share (S) replicating data to the device, as configured in the device and as shown in the DXi GUI for the ingest CSV. UserDataSizeAvg The sum of all observed UserDataSize values, divided by the number of observations for the selected time period. Sumof ObservedUserDataSizeValues Number of Observations UserDataSizeMax UserDataSize The maximum UserDataSize value observed for the selected time period. For Partition or Share Chargeback Ingest files The amount of user data stored in the partition or share at the end of the selected time period. This value represents the sum of the file sizes in the partition or share prior to data reduction. For Replication Chargeback Ingest files The size of the replicated partitions or shares sent to the system at the end of the selected time period. This value includes the size of the ingested replication copies. InputBytes UniqueBytesPreCompression UniqueBytesPostCompression The total size of data as it arrives at the device during the selected time frame. This value represents only ingested data it does not include deleted data. The total amount of ingested data after deduplication for the selected time frame. This value represents only ingested data it does not include deleted data. The total amount of ingested data after total reduction (both compression and deduplication) for the selected time range. This value represents only ingested data it does not include deleted data. DXi Advanced Reporting User s Guide 67

78 Ingest (Chargeback) Reports Field ReductionRatio Description The sum of all observed UserDataSize values, divided by the sum of all UniqueBytesPostCompression values. SumOf Observed UserDataSize Values SumOf UniqueBytesPostCompression Values DedupRatio The sum of all UserDataSize values, divided by the sum of all UniqueBytesPreCompression values. SumOf Observed UserDataSize Values SumOf UniqueBytesPreCompression Values Deduplication Ratio Considerations To gain a better understanding of the deduplication ratio, review the following: Statistical Accuracy The deduplication ratio per partition or share is based on the average total reduction of all data ingested during the selected time period against all data stored on the system. Because this ratio is an average, the accuracy increases as the period of time increases. The average is based on 1-minute time points throughout the time period. 1 hour contains 60 time points 1 day contains 1440 time points. Statistical accuracy becomes better when you have more time points. Blockpool Impacts If two partitions or shares have a large amount of similar data, the first partition or share to ingest the data will have a lower deduplication ratio because all deduplicated data resides in the same blockpool. In other words, the first partition or share will contain more of the deduplicated data. DXi Advanced Reporting User s Guide 68

79 Ingest and Delete Report Field CompressionRatio Description The ReductionRatio value divided by the DedupRatio value. ReductionRatio DedupRatio OnDisk OnDiskAvg The amount of effective disk space being used at the end of the selected time period. The sum of all OnDisk values, divided by the number of observations for the selected time period. Sumof allondiskvalues Number of Observations PercentOfTotalCapacity t_total The percent of the total capacity of disk space being used for the selected time period. The total of all ingest values for the partitions or shares on the device. Ingest and Delete Report The Ingest and Delete report displays information about the amount of unique data, after compression and deduplication, that is backed up to and deleted from the DXi system on an hourly, daily, and weekly basis. The report contains Ingest and Deletions graphs for the three time variables. Ingest and Deletions Graphs The Ingest and Deletions graphs display the amount of unique data after compression and deduplication being ingested and deleted from the DXi system. Use these graphs to determine whether the system is in a steady state. When the system is in a steady state, the amount of data being backed up to the system is balanced with the amount of data expiring on the system. Examples Non-Steady State When the system is new and expiration policies are not running on a regular basis, you will see more DXi Advanced Reporting User s Guide 69

80 Ingest and Delete Report data being ingested than deleted. Steady State The amounts of data being ingested and deleted from the system over a period of time are similar. The Ingest and Deletions graphs display the same elements for their different time variables per hour, per day, or per week. Review the following information. Figure 51: Ingest and Deletions per hour Graph UniqueBytesIngest (green) Displays the amount of unique data, which is data after compression and deduplication, ingested by the system for the specific graph's time variable per hour, per day, or per week. Use this value to determine whether your system is in a steady state by comparing it to the UniqueBytesDeleted value. If the two values are similar, your system is in a steady state. UniqueBytesDeleted (blue) Displays the amount of unique data, which is data after compression and deduplication, deleted by the system for the specific graph's time variable per hour, per day, or per week. Use this value to determine whether your system is in a steady state by comparing it to the UniqueBytesIngest value. If the two values are similar, your system is in a steady state. DXi Advanced Reporting User s Guide 70

81 Space Reclamation Report Space Reclamation Report The Space Reclamation report displays information about the overall progress of disk space reclamation activities. In addition, it provides details about the underlying data from which space is being reclaimed. Use this report to monitor the performance of space reclamation, as well as to identify issues with overlapping processes or performance issues in the RAID subsystem, such as with the file system or Fibre Channel path. The report contains the following graphs: Space Reclamation Progress Graph Space Reclamation Bytes Graph Space Reclamation/Compaction Graph Space Reclamation Progress Graph The Space Reclamation Progress graph displays the progress of the space reclamation stages. Use this graph to view the progress that has been made in reclaiming space on the DXi device. Review the following to gain a better understanding about space reclamation stages and progress. Figure 52: Space Reclamation Progress Graph Stages of Space Reclamation Space reclamation consists of the following stages. Stage 1: Compact Compaction is the process that reclaims disk space allocated to the device's blockpool. The Compact stage deletes data identified by tags with a reference count of zero. In this first Compact stage, the system deletes data that was tagged with a reference count of zero during a previous space reclamation. This stage allows you to do the following: a. Cancel a reclamation process to recover data that you do not want deleted. b. Delete data still tagged with a reference count of zero in a new reclamation process, without restarting the previous process. DXi Advanced Reporting User s Guide 71

82 Space Reclamation Report Stage 2: Reconcile The Reconcile stage collects a list of tags set to expire, along with the associated reference counts. Stage 3: Delete The Delete stage decrements the reference count of tags that have expired. Stage 4: Compact In the second Compact stage, the system deletes any tags with a reference count of zero in the current space reclamation process. gcstage x 10 (green) Represents the current stage of space reclamation activity. For readability purposes, the stage number is multiplied by 10 on the graph. Example the gcstage x 10 line plots at 20 along the y-axis to identify stage 2 (2 x 10 = 20). Progress (light blue) Indicates the percentage of space reclamation that is currently complete. Total Progress (dark blue) Indicates the space reclamation progress completed over time. Note: The Progress and Total Progress variables may never reach 100% because sampling is performed at specific intervals. When reclamation completes, no additional data is returned and Advanced Reporting cannot collect the 100% data point. Space Reclamation Bytes Graph The Space Reclamation Bytes graph displays details about the data that is being reduced and the space that is being reclaimed on the DXi system. Review the graph's following variables. DXi Advanced Reporting User s Guide 72

83 Space Reclamation Report Figure 53: Space Reclamation Bytes Graph User Bytes to Reclaim (light blue) Displays the amount of space that is reclaimed as ingested data is reduced. For each cluster of data, the peak shows the amount of ingested data, and the decline of the cluster's values shows the amount of disk space that is reclaimed by data reduction. Disk Bytes to Reclaim (light green) Displays the actual space that is reclaimed during Stage 4 of space reclamation. For information about space reclamation stages, see Space Reclamation Progress Graph. Space Reclamation/Compaction Graph The Space Reclamation/Compaction graph displays the number of bytes freed by compaction, which is the process that reclaims disk space allocated to thedxi device's blockpool. Review the graph's variable below. Note: Compaction only runs when disk space is extremely low, and so there could be long periods when compaction is not run and data is not displayed as shown below. Figure 54: Space Reclamation/Compaction Graph DXi Advanced Reporting User s Guide 73