Introduction to the IBM System Storage DS6000

Transcription

1 System z Expo October 13 17, 28 Las Vegas, Nevada Introduction to the IBM System Storage DS6 Session zvg36 Eric Farman (farman@us.ibm.com) z/vm I/O Development

2 Trademarks The following are trademarks of the International Business Machines Corporation in the United States, other countries, or both. Not all common law marks used by IBM are listed on this page. Failure of a mark to appear does not mean that IBM does not use the mark nor does it mean that the product is not actively marketed or is not significant within its relevant market. Those trademarks followed by are registered trademarks of IBM in the United States; all others are trademarks or common law marks of IBM in the United States. For a complete list of IBM Trademarks, see *, AS/4, e business(logo), DBE, ESCO, eserver, FICON, IBM, IBM (logo), iseries, MVS, OS/39, pseries, RS/6, S/3, VM/ESA, VSE/ESA, WebSphere, xseries, z/os, zseries, z/vm, System i, System i5, System p, System p5, System x, System z, System z9, BladeCenter The following are trademarks or registered trademarks of other companies. Adobe, the Adobe logo, PostScript, and the PostScript logo are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States, and/ or other countries. Cell Broadband Engine is a trademark of Sony Computer Entertainment, Inc. in the United States, other countries, or both and is used under license therefrom. Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both. Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation in the United States, other countries, or both. Intel, Intel logo, Intel Inside, Intel Inside logo, Intel Centrino, Intel Centrino logo, Celeron, Intel Xeon, Intel SpeedStep, Itanium, and Pentium are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. UNIX is a registered trademark of The Open Group in the United States and other countries. Linux is a registered trademark of Linus Torvalds in the United States, other countries, or both. ITIL is a registered trademark, and a registered community trademark of the Office of Government Commerce, and is registered in the U.S. Patent and Trademark Office. IT Infrastructure Library is a registered trademark of the Central Computer and Telecommunications Agency, which is now part of the Office of Government Commerce. * All other products may be trademarks or registered trademarks of their respective companies. Notes: Performance is in Internal Throughput Rate (ITR) ratio based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput that any user will experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput improvements equivalent to the performance ratios stated here. IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply. All customer examples cited or described in this presentation are presented as illustrations of the manner in which some customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics will vary depending on individual customer configurations and conditions. This publication was produced in the United States. IBM may not offer the products, services or features discussed in this document in other countries, and the information may be subject to change without notice. Consult your local IBM business contact for information on the product or services available in your area. All statements regarding IBM's future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. Information about non-ibm products is obtained from the manufacturers of those products or their published announcements. IBM has not tested those products and cannot confirm the performance, compatibility, or any other claims related to non-ibm products. Questions on the capabilities of non-ibm products should be addressed to the suppliers of those products. Prices subject to change without notice. Contact your IBM representative or Business Partner for the most current pricing in your geography.

3 Agenda IBM System z Expo Overview Hardware Details Management Performance Advanced Copy Services z/vm Specifics OS Support Statements Summary Special Thanks to Curtis Neal (IBM Tucson) for DS6 hardware-specific chart-ware and to Steve Wilkins for preparing this presentation 3

4 Storage Challenges Reduce administration and support costs; need common management platform Simplify storage management system; need consolidation Minimize complexity & cost compared to separate, purposebuilt storage Improve disk utilization and lower storage cost (per GB); no one is throwing data away anymore DS6 is here to help 4

5 DS6 Overview Exceptional price and performance in a small package Same advanced capabilities as Enterprise Storage Server (ESS) 75, ESS 8, and DS8 Designed for easy install and service; modular packaging Can start small and grow large in physical storage capacity Up to 8 FC/FICON host ports, 4 GB Cache Perfect when less QOS is required when compared to the DS8 Cross platform support; System i, System p, System z, Intel, Sun, etc. DS6 Find current interoperability matrix at 5

6 DS6 Overview (continued) DS6 GUI is supported for configuration & maintenance Offline configuration tool is supported Concurrent Code Load with Multi-pathing Software Concurrent Maintenance Expansion frames can be added concurrently Maximum of 32 LSS s 32 if all FB or CKD 16 FB and 16 CKD if Mixed Remote Support via Modem 6

7 DS6 Hardware Details Server Enclosure Expansion Storage Enclosure Models Controller ( ) & Expansion Enclosure (175-EX2) Up to 16 DDMs Dual Active Controllers (Clustered) FICON/FCP Host Attachment Up to 8 Ports (LW & SW) Battery Backed Mirrored Cache (Up to 72 Hours) Fully Redundant Power & Cooling Maximum of 7 Expansion Enclosures (128 DDMs) 3U Integrated RAID Controller ESS Advanced Function FlashCopy Metro and Global Mirror Metro/Global Copy Global Copy System z PAV, Multiple Allegiance Light Path Diagnostics DS Storage Manager Software 7

8 Rear View of the DS6 Controller Power Switch Intelligent Battery Modules Light Path Diagnostics Indicators Rack Beacon Connector 3U Service Documentation Controller Cards Redundant Power and Cooling Modules 8

9 DS6 Product Specifications DS68 Controllers Dual Active Max Cache 4 GB Drive Interface 2Gb FC/FICON Max Hosts 124 Max Storage / Disks 128 FATA 7.2K RPM: 5GB Disk Types FC 1K RPM: 146GB, 3GB FC 15K RPM: 73GB, 146GB Capacity 292GB to 64TB Max Disk Loops 4 (2 dual redundant) Max LUNs 8192 (up to 2TB LUN size) RAID Levels 5, 1 RAID Array Sizes 4 or 8 drives z/os, z/vm, z/tpf, z/vse, Linux, i5/os, Operating Systems OS/4, AIX, SUN Solaris, HP-UX, VMWare, Microsoft Windows Packaging 3U Controller & Expansion Drawers Controller:.69 kva Power consumption Expansion drawer:.48 kva Uses 11V power 9

10 Management and Serviceability Customer Setup and Service Express configuration wizards Easy to remove and replace components Light Path Diagnostics and Controls Guides you to the component requiring service DS Storage Manager Provides centralized management Provides enterprise view of all managed systems Automatic and manual device discovery Consistent interface across all platforms Intuitive GUI enables: Easy to navigate and administer interface Express configuration through wizards Manage all hardware and software components Comprehensive Online help and documentation Configuration and Service Fault Management Alert message pop-ups Step-by-step instructions on how to remove and install components Hyperlinks for quick drill-down to specific system components DS6 CLI Need Windows PC to run software 1

11 Performance Comparison Model 8 to the DS68 Full Box Max. Configuration - Fixed Block Model 8 DS68 Open IOPS from Cache 112 KIO/sec 332 KIO/sec Read Bandwidth from Cache 69 MB/sec 1648 MB/sec Open Seq. Read from Disk 55 MB/sec 1224 MB/sec Open Seq. Write to Disk 55 MB/sec 35 MB/sec Open DB 17 KIO/sec 31 KIO/sec 11

12 Performance Comparison Model 8 to the DS68 Full Box Max. Configuration - CKD z/os IOPS from Cache Model 8 29 KIO/sec 7 KIO/sec DS68 Read Bandwidth from Cache z/os Seq. Read from Disk 55 MB/sec 69 MB/sec 724 MB/sec 192 MB/sec z/os Seq. Write to Disk 343 MB/sec 34 MB/sec z/os DB 9 KIO/sec 37 KIO/sec 12

13 IBM System Storage FlashCopy Services FlashCopy Data Set Data Set Initial Copy FlashCopy Full Copy and NoCopy Dataset Level FlashCopy Incremental FlashCopy FlashCopy Consistency Group FlashCopy Persistent FlashCopy Reverse Restore FlashCopy Reverse Restore 13

14 IBM System Storage Disk Mirroring Metro Mirror Two site synchronous Short distances Global Copy (PPRC-XD) Asynchronous mirroring Without consistency Long distances Global Mirror Asynchronous mirroring With consistency Long distances Primary Site A Metro Site B Primary Site A Out of Region Site B Metro Site A Out of Region Site B 14

15 z/vm Specifics VM supports FICON attachment as 399 Model 3 or 6 Controller Native controller mode 175 supported on z/vm 5.2. with APAR VM63952 brings support on par with z/os VM simulates controller mode supported by each guest VM supports the following ECKD DASD types: 339 Models 2, 3, and 9 (including mod-27 and mod-54) 339 Models 2 and 3 in 338 track compatibility mode VM supports FCP-attached SCSI LUNs as emulated 9336 Model 2 DASD Supports 65,52 cylinder 339 Model 9 (a.k.a. model 54) and 1TB SCSI LUN VM fully supports the preferred pathing anomaly of the DS6 15

16 DS6 Logical Path Illustration vol vol vol vol vol vol vol vol vol vol Port B is preferred path for volumes on right side of PCI bus; Port A is nonpreferred path Port A is preferred path for volumes on left side of PCI bus; Port B is nonpreferred PCI Bus Port A Port B

17 z/vm Preferred Pathing Support DS6 hardware structure is such that not all DS6 ports (FICON or FCP) have equivalent access to the volumes (DASD or LUNs) Half the volumes need to be accessed by crossing a PCI-X bus This bus crossing can add 3% to the response time and reduce bandwidth by 5% For FICON connections, VM dynamically discovers which ports (paths or CHPIDs) are preferred versus non-preferred when a volume is varied online For FCP connections, preferred versus non-preferred paths must be defined on the SET EDEVICE command (or EDEVICE system configuration file statement) z/vm 5.3. will dynamically discover EDEVICE path preference at vary on For both FICON and FCP, VM contains logic in its I/O scheduler (or SCSI device driver) to use preferred paths over non-preferred paths In general, I/O will failover (i.e., be redriven) on non-preferred paths only if no preferred paths are available or functioning NEW 17

18 z/vm Query PATHS command QUERY PATHS command will display which FICON paths are preferred versus non-preferred when connected to a DS6 Example: q paths to 991 Device 991, Status ONLINE CHPIDs to Device 991 (PIM) : Physically Available (PAM) : Online (LPM) : Preferred : Legend + Yes - No 18

19 z/vm SET EDEVice Command VM emulates SCSI LUNs as 9336 FBA DASD Issue SET EDEVICE command with the 175 attribute to map a VM emulated 9336 DASD to a DS6 SCSI LUN Links LUN to VM's DS6 SCSI driver PREFerred and NOTPREFerred parameters define preferred versus non-preferred SCSI paths >>-SET--EDEVice--rdev > >---TYpe--FBA--ATTRibutes Paths --->< ADD PATH '-DELete PATH-' Paths: '-SCSI-' < < --FCP_DEV--nnnn--WWPN--wwwwwwwwwwwwwwww--LUN--llllllllllllllll--> > PREFerred---- '-NOTPREFerred-' PREF and NOTPREF not required and ignored in z/vm

20 z/vm Query EDEVice Command Use QUERY EDEVICE command to display what attribute (i.e., device driver) has been defined for an emulated 9336 DASD Ensure that attribute 175 is displayed for emulated 9336 DASD defined on a DS6 Use DETAILS parameter of QUERY EDEVICE to display which DS6 SCSI paths have been defined (or discovered) as preferred versus non-preferred Examples: q edev 67 EDEV 67 TYPE FBA ATTRIBUTES 175 Ready; q edev 69 details EDEV 69 TYPE FBA ATTRIBUTES 175 PATHS: FCP_DEV: B1 WWPN: 44663C223B LUN: 11 PREF FCP_DEV: B2 WWPN: 44663C223C LUN: 11 NOTPREF Ready; 2

21 z/vm FlashCopy Instant copy of source disk to target Guest support via CCW channel program support Restricted to dedicated or fullpack minidisks Native support via CP FLASHCOPY command Enhanced in z/vm 5.3. with Faster Performance and synchronous command operation Multiple targets from one source New QUERY VIRTUAL FLASHCOPY command Flashcopy Version 2 hardware supported NEW Dataset Relocation (data on different track offsets when moved to target) Multiple Relationships (source track can have many target tracks, but target track can have only one source track) Cross LSS (source and target can be in different logical control units) source instant copy target 21

22 Peer-to-Peer Remote Copy (PPRC) Continuous copy of source disk changes to target Guest support via CCW channel program support Restricted to dedicated or fullpack minidisks Native support via ICKDSF Release 17 running in CMS virtual machine PPRC hardware Metro Mirror (changes from source to target synchronous to initiating I/O) Global Copy (changes from source to target asynchronous to initiating I/O; allows extended distances between source and target ) Metro/Global Copy (3 volume PPRC link; Metro Mirror link between source and intermediate volumes; Global Copy link between intermediate and target volumes; allows extended distances with added data integrity) Global Mirror (asynchronous link between source and target; software managed consistency groups allow failover to point-in-time consistent copy in case of disaster) CP QUERY DASD DETAILS command displays PPRC volume status (Primary, Secondary, or Cascading Intermediate) when a PPRC link is active for a disk source Continuous copy target 22

23 z/vm Parallel Access Volumes (PAV) Base volume shadowed by 1 or more Alias volumes Looks like multiple separate, real DASD to host operating system Allows concurrent I/O to Base data Greater I/O performance (throughput) by reducing I/O queuing Supported for VM guests as dedicated DASD via the CP ATTACH command or DEDICATE user directory statement Supported also for VM minidisks on z/vm 5.2. with APAR VM63952 VM provides workload balancing for guest s that don t exploit PAV (e.g., CMS) Real I/O dispatcher queues minidisk I/O across system attached alias volumes VM provides linkable minidisks for guests that do exploit PAV (e.g., z/os and Linux) New PAVALIAS parameter of the DASDOPT and MINIOPT user directory statements or the new CP DEFINE PAVALIAS command create alias DASD E1-E12 access same data minidisks (fullpack and non-fullpack) for exploiting guests base alias alias RDEV E1 RDEV E11 RDEV E12 23

24 z/vse and z/tpf Support Statements FICON VSE z/vse Version 3 Release 1 z/vse Version 4 Release 1 FCP z/vse Version 3 Release 1 N_Port ID Virtualization z/vse Version 4 Release 1 N_Port ID Virtualization Point-to-Point attachment Program-directed re-ipl Preferred pathing supported for FICON and FCP FICON TPF z/tpf Version 1 Release 1 TPF Version 4 Release 1 with APAR PJ3168 FCP Not Supported Preferred pathing supported for FICON 24

25 z/os Support Statement FICON - OS/39 V2R1, z/os V1R4, and above via the following service: Component APAR PTFs IOS OA966 UA167 - OS/39 V2R1 UA z/os V1R4 UA z/os V1R41 UA z/os V1R5 UA z/os V1R6 IOS OA134 UA OS/39 V2R1 UA z/os V1R4 UA z/os V1R41 UA z/os V1R5 UA z/os V1R6 DFSMS OA7891 UA G UA153-1H UA1531-1J DFSMS OA8521 UA1532-1G UA1533-1H UA1534-1J RMF OA9921 UA z/os V1R4, V1R41, V1R5 UA z/os V1R6 FCP Not Supported FICON Preferred Pathing Supported 25

26 z/os Preferred Pathing Example DEVSERV command with the PATH option: DS P,/28 IEE459I DEVSERV PATHS 321 UNIT DTYPE M CNT VOLSER CHPID=PATH STATUS RTYPE SSID CFW TC DFW PIN DC-STATE CCA DDC ALT CU-TYPE 28,3393,A,114,ZOS7S9,A2=+ A3=+ PATH ATTRIBUTES NP PF Y YY. YY. N SIMPLEX ************************ SYMBOL DEFINITIONS ************************ A = ALLOCATED + = PATH AVAILABLE PF = PREFERRED NP = NON-PREFERRED 26

27 IBM Linux for System z Support Qualities Unsupported Do not attempt. Will not work. High risk. No IBM support line support Bronze IBM Untested No IBM testing 3rd party supported No known issues IBM Support Line supports only issues recreateable on "Gold level" environment Silver IBM Defect support IBM testing not comprehensive No known issues IBM support Line limited support e.g. PD/PSI risk is on customer Gold IBM Qualified/IBM RPQ Thoroughly tested by IBM Fully Supported by IBM support line Testing may move environments from "Silver" to "Gold" level "Silver" IBM defect support may mean, both IBM is planning to qualifiy environment in the future, or IBM has no plans to qualify environment For complete confidence in any "Silver" environment, raise an RPQ/One-Off in order to lift it to "Gold" level Please confirm "Gold" level, "IBM RPQ" environments with IBM prior to running it. 27

28 OS Support Statements - Linux & z/vm Controller z/vm 5.1 z/vm 5.2 z/vm 5.3 SLES 8 SLES 9 RHEL3 RHEL4 IBM DS6 FICON OUT OF SERVICE IBM Qualified 52RSU IBM Qualified GA IBM Qualified GA FICON IBM Qualified IBM Qualified IBM Qualified IBM Qualified SLES1 and RHEL5 qualification planned FCP Controller z/vm 5.1 z/vm 5.2 z/vm 5.3 SLES 8 SLES 9 RHEL3 RHEL4 IBM DS6 FCP OUT OF SERVICE IBM Qualified 52RSU IBM Qualified GA IBM Qualified GA IBM Qualified IBM Qualified Not supported Defect Support SLES1, RHEL4, and RHEL5 qualification planned 28

29 Summary: System z with the DS6 Low-cost, affordable System z solution that fits in standard 19" rack Customers can now afford and leverage new technology instead of purchasing or retaining older, used hardware Outstanding TCO for customers' whose specific capacity and performance needs are met For smaller capacity needs For less I/O intensive transaction processing Excellent choice for low-end System z customers Perfect for IBM z9 BC, z89, and z8 customers 29

30 Questions? Fin Contact Info: Eric Farman (67)