NEC Express5800 Series. MegaManager Ver. 5. User's Guide. (Web download version) A

Transcription

1 NEC Express5800 Series MegaManager Ver. 5 User's Guide (Web download version)

2 Trademarks and Registered Trademarks Linux is a trademark or registered trademark of Linus Torvalds. MegaRAID, MegaMonitor, and MegaManager are trademarks or registered trademarks of LSI Logic Corporation in the United States. All company names and product names mentioned herein are trademarks or registered trademarks of the respective companies. Caution: (1) Reproduction of all or any part of this document without permission from NEC is prohibited. (2) The contents of this document are subject to change without prior notice. (3) Duplication or modification of all or any part of this document without permission from NEC is prohibited. NEC Corporation

3 Preface This document describes MegaManager, which is a utility for the NEC Express5800 series connecting the N F/81F disk array controller. This document is intended for those who have enough understanding of the Linux mechanism and operations. For information and questions about Linux operations, refer to the online help of your Linux operating system. Also refer to the documents about the N F/81F disk array controller. The screen shots shown in this document may be slightly different from those actually displayed on your monitor. Symbols used in this document In this document, the following two symbols are used. The respective symbols indicate: Notice you must always take when handling the utility or a device, or especially important point. Important Information you should know or useful hint on an operation

4 Contents 1. Overview Major Functions Setting Up MegaManager Operating Requirements Installation Before Installing MegaManager Installing MegaManager Uninstalling MegaManager Starting Up and Terminating MegaManager Starting Up MegaManager Terminating MegaManager MegaManager Functions Configure Easy Configuration New Configuration View/Add Configuration Clear Configuration Initialize Objects Adapter Logical Drive Physical Drive Channel Rebuild Check Consistency Operations on MegaManager Creating an Array/Logical Drive Easy Configuration New Configuration Add Configuration Deleting Arrays/Logical Drives Initializing a Logical Drive Initializing a Logical Drive by Using the "Objects" Menu Initializing a Logical Drive by Using the "Initialize" Menu Checking Consistency of a Logical Drive

5 Checking Consistency by Using the "Objects" Function Checking Consistency by Using the "Check Consistency" Menu Referencing the Progress of Consistency Check Rebuilding an Array Rebuilding an Array by Using the "Objects" Menu Rebuilding an Array by Using the "Rebuild" Menu Viewing the Rebuild Progress Setting/Cancelling a HotSpare Disk Setting a HotSpare Disk Cancelling a HotSpare Disk Miscellaneous Referencing/Modifying the N F/81F Disk Array Controller Setting Referencing/Modifying a Logical Drive Setting Referencing Information on an HDD

6 1. Overview MegaManager is a utility to manage disk arrays (hereafter referred to as arrays) controlled by the N F/81F disk array controller. With MegaManager, you can monitor and maintain the arrays constructed on the local NEC Express5800 series. MegaManager provides a graphical user interface and online operations without interrupting the system Major Functions MegaManager provides the following functions: Configuration functions Allows you to configure (create, delete, etc.) arrays/logical drives through GUI easily. Reference functions Allows you to check the current statuses of arrays/logical drives graphically. is not provided with functions to log events or errors in itself. However, MegaManager Maintenance functions Allows you to manage and maintain arrays through GUI. HDD, configure a HotSpare disk, initialize an array, etc. With these functions, you can rebuild an - 6 -

7 2. Setting Up MegaManager 2.1. Operating Requirements The following hardware and software are required to operate MegaManager: Hardware - PC : NEC Express5800 series connecting the N F/81F disk array controller - Free space in HDD : 1 MB approximately Software *For information about Linux distributions verified for proper operation, refer to "Express5800 on Linux" in the "NEC Express5800 Web Site Asia Pacific." [URL] Installation Before Installing MegaManager Before you install MegaManager, be sure to satisfy the following conditions: You have logged in as a root user. The MegaRAID driver has been installed in the machine and loaded. To check whether the MegaRAID driver has been loaded, execute the following command: # lsmod grep megaraid megaraid xxxxxx yy When the command gets a reply as shown in the example above, the driver has been loaded. In the example above, xxxxxx indicates the size of the driver module and yy indicates the number of users of the driver Installing MegaManager 1. Download the MegaManager package file (*.rpm) through the Web, and then copy it into an appropriate directory. 2. Execute the following command to install MegaManager. # rpm -Uvh megamgr-5.x-x.i386.rpm ("5.x-x" stands for the version number.) 3. Execute the following command to verify that MegaManager has been properly installed. # rpm -qi megamgr 2.3. Uninstalling MegaManager 1. Execute the following command to uninstall MegaManager. # rpm -ev megamgr - 7 -

8 2.4. Starting Up and Terminating MegaManager To operate MegaManager, X Window (GUI) does not need to be activated Starting Up MegaManager Move to the directory where MegaManager has been installed, and then run the MegaManager startup script. [In the environment where X Window (GUI) is not running] cd /opt/nec/megaraid/megamgr./megamgr [In the environment where X Window (GUI) is running] cd /opt/nec/megaraid/megamgr./megamgr.sh After executing either of the above commands, MegaManager Main Screen and Management Menu appears on the console as shown below: Terminating MegaManager To terminate MegaManager, press the ESC key on MegaManager Main Screen. (See Section 2.4.1, "Starting Up MegaManager.") Pressing the ESC key displays the confirmation message "Exit?" for termination. To terminate MegaManager, select "YES", or to continue operating MegaManager, select "NO." - 8 -

9 3. MegaManager Functions The management menu of MegaManager is organized as shown below: Management Menu Configure Configures arrays/logical drives. Easy Configuration New Configuration Creates arrays/logical drives. View/Add Configuration Clear Configuration Deletes arrays/logical drives. Initialize Initializes a logical drive. Objects Adapter Logical Drive Physical Drive Channel Rebuild References or modifies the setting information on respective devices. Rebuilds an array. References or modifies the setting information on the N F/81F disk array controller. References or modifies the setting information on the logical drive, or allows various operations. References information on an HDD, or allows various operations. References or modifies the termination state of the channels. Check Consistency Checks for consistency of logical drives. Advanced Menu Provides an extended function. Reconstruct Logical Drive Rebuilds an array. (*Do not use this function.) Important Reconstruct Logical Drive converts the RAID level of a specified array. When a RAID1 array is converted to RAID0 or RAID5 array is converted to RAID0 with the function, the capacity of the array is expanded, but the redundancy of the array may be lost if an error occurs. (Adversely, a RAID0 array cannot be converted to RAID1 or RAID0 array cannot be converted to RAID5.) This chapter describes the functions available on Management Menu

10 3.1. Configure This menu item provides functions to configure arrays/logical drives. Since the configuration information on created arrays/logical drives is saved in the arrays connected with the N F/81F disk array controller, the configuration information need not to be reset after the controller is replaced. For details on the operation procedures, see Section 4.1, "Configuring an Array/Logical Drive" in this manual Easy Configuration This function creates an array/logical drive easily. Easy Configuration is available only when there are unused HDDs or a free space is present in the existing array. However, when an array using the first HDD (with the lowest ID assigned) has already been present, (for example, if an RAID1 using two HDDs with ID 0 and ID 1 has already been present), Easy Configuration is unavailable to add a new array even if there are unused HDDs. In this case, use View/Add Configuration described later. Easy Configuration does not allow specifying a RAID level and logical drive capacity. To create or add a new array by specifying a RAID level/logical drive capacity, use New Configuration or View/Add Configuration described later New Configuration This function creates new arrays/logical drives. Important New Configuration overwrites existing logical drives with information newly configured with it. To keep using existing arrays/logical drives, do not use New Configuration View/Add Configuration This function adds a new array when there are unused HDDs or adds a new logical drive when there is unused space in an existing array Clear Configuration This function deletes existing arrays/logical drives. For details on the operation procedure, see Section 4.2, "Clearing Arrays/Logical Drives" in this manual. Clear Configuration deletes all existing arrays/logical drives. arrays/logical drives, never use Clear Configuration. To keep using existing Important 3.2. Initialize This function initializes a logical drive. For details on the operation procedure, see Section 4.3, "Initializing a Logical Drive" in this manual

11 3.3. Objects This menu item provides functions to reference or modify the setting information on the respective devices Adapter This function references or modifies the configuration of the N F/81F disk array controller. Modifying the settings of the controller affects the operation of existing arrays and logical drives, thus make a Important modification only when necessary. "Clear Configuration" indicated on the Adapter menu functions the same as Clear Configuration mentioned in Section 3.1.4, "Clear Configuration." To continue using existing arrays/logical drives, never use Clear Configuration Logical Drive This function references or modifies the setting information on a specified logical drive. This function also provides the following functions usable to the specified logical drive: Initialize Same as the function mentioned in Section 3.2, "Initialize." Check Consistency Same as the function mentioned in Section 3.5, "Check Consistency."

12 Physical Drive This function references information on a specified HDD or progress of Rebuild. This function also provides the functions to perform operations to the specified HDD: Rebuild Same as the function mentioned in Section 3.4, "Rebuild." Make Online Sets the HDD online manually when it is offline. Fail Drive Sets the HDD offline manually when it is online. Make HotSpare Sets the specified HDD as a hot spare (HotSpare) disk. The HotSpare disk is a spare HDD used to rebuild data in a faulty HDD while executing the standby rebuild. For details on how to use this function, see Section 4.6, "Setting/Canceling a HotSpare Disk" in this manual. View Rebuild Progress This function references the progress of how the specified HDD is being rebuilt. For details on the operation procedure, see Section 4.5.3, "Viewing the Rebuild Progress" in this manual Channel This function references or modifies the termination state (Termination State) of a specified channel

13 3.4. Rebuild If one of HDDs comprising an array becomes faulty, you can restore data in a new HDD by replacing the faulty HDD and rebuilding. This menu is to rebuild an array. For details on the operation procedure, see Section 4.5, "Rebuilding an Array" in this manual. The performance of the main unit may deteriorate during rebuilding. The following types of rebuild are available: Manual rebuild Specify the faulty (failed) HDD, then rebuild the array manually. Automatic rebuild The following two types of automatic rebuild are available: - Standby rebuild Restores the data in the faulty HDD into the preset HotSpare disk. - Hot-swap rebuild Restores the data in the faulty HDD into a replaced HDD Check Consistency Check Consistency checks for the redundancy data (parity) of HDDs comprising an array. If the redundancy data (parity) is not correct, Check Consistency repairs it. This function makes a consistency check. For details on the operation procedure, see Section 4.4, "Checking Consistency of a Logical Drive" in this manual. The performance of the main unit may deteriorate during Check Consistency. If the main unit is restarted during Check Consistency, it resumes from the point where it was stopped

14 4. Operations on MegaManager MegaManager allows operations through keyboard only. (MegaManager does not support operations through mouse.). The table below shows the keys assigned for MegaManager operations. Key Description ENTER Determines the selected menu item. ESC Goes back to the previous menu screen., Selects a menu item. (Moves among menu items.) Space Selects an HDD or logical drive F7 References the progress of Check Consistency. F10 Initializes logical drives or executes Check Consistency. This chapter describes how to operate MegaManager

15 4.1. Creating an Array/Logical Drive MegaManager provides the following three functions to create an array/logical drive: - Easy Configuration - New Configuration - Add Configuration This section describes the steps for creating an array/logical drive with the respective functions listed above Easy Configuration Easy Configuration configures an array/logical drive easily. 1. Select "Configure"-"Easy Configuration". The HDD selection menu is displayed afterselection. 2. Select HDDs to configure the array. In the HDD selection menu, select HDDs to configure the array by pressing the Space key. After selecting the HDDs, press the Enter key to determine. 3. Check the array/logical drive settings, then select "Accept". Check for the settings such as RAID level of the array, logical drive capacity, etc., and then select "Accept" if there is no problem. Selecting "Accept" re-displays the HDD selection menu mentioned at Step 2, so press the ESC key again. After pressing the ESC key, a confirmation for saving the configuration information is displayed

16 4. Select "YES" to save the configuration information. Select "YES" in the confirmation to save the configuration information. Selecting "NO" cancels the configuration configured. After the configuration information is successfully saved, the message Configuration is Saved. is displayed. Press any key New Configuration New Configuration creates new configuration information. 1. Select "Configure"-"New Configuration". The menu to confirm continuing the operation Proceed? is displayed after selection. 2. Select "YES". The HDD selection menu is displayed after selection. Selecting "NO" cancels New Configuration. 3. Select HDDs to configure the array or arrays. In the HDD selection menu, select HDDs to configure the array or arrays by pressing the Space key. After selecting the HDDs, press the Enter key. To configure two (or more) arrays as shown in the figure on the right, select HDDs to be put in the first array, and then determine them by pressing the Enter key. After that, select HDDs to configure the second array by pressing the Space key, determine them by pressing the Enter key, (and then repeat this for the other arrays to be configured). After completing the selection for all the arrays as described above, press the Enter key again; the array/logical drive configuration settings are displayed

17 4.Check the array/logical drive settings, then select "Accept". Check for the settings such as RAID level of the array, logical drive capacity, etc., and then select "Accept" if there is no problem. Selecting "Accept" redisplays the HDD selection menu mentioned at Step 3, so press the ESC key again. After pressing the ESC key, a confirmation for saving the configuration information is displayed. You can create an array with larger capacity such as RAID10 or RAID50 by setting "YES" to "Span" on the logical drive in the state where two or more arrays have already been set. - RAID10 : RAID level (RAID1+0) in which two RAID1 arrays are joined into one array RAID0 RAID1 RAID1 HDD1 HDD2 HDD3 HDD4 - RAID50 : RAID level (RAID5+0) in which two RAID5 arrays are joined into one array RAID0 RAID5 RAID5 HDD1 HDD2 HDD3 HDD4 HDD5 HDD6 In the case shown at Step 3, setting "Span = NO" creates two approximately 17-GB RAID5 arrays. In the same situation, setting "Span = YES" configures RAID50 (RAID5 indicated on the menu), and the logical drive capacity is approximately 34 GB, which is almost as twice as that of setting "Span = NO."

18 4. Select "YES" to save the configuration information. Select "YES" to the confirmation to save the configurations. Selecting "NO" cancels the set configuration information. After the configuration information is successfully saved, the message Configuration is Saved. is displayed. Press any key Add Configuration Add Configuration adds a new array when there are unused HDDs or adds a new logical drive when there is unused space in an existing array. 1. Select "Configure"-"View/Add Configuration". The HDD selection menu is displayed after selection. 2. Select HDDs to configure the array. To add a new array with the HDD selection menu, select HDDs to configure the array by pressing the Space key. After selecting the HDDs, press the Enter key to determine them. To add a logical drive to an existing array, select one of the HDDs comprising the existing array, and then press the Enter key to determine the target array

19 3. Check the array/logical drive settings, then select "Accept". Check for the settings such as RAID level of the array, logical drive capacity, etc., and then select "Accept" if there is no problem. Selecting "Accept" re-displays the HDD selection menu mentioned at Step 2, so press the ESC key again. After pressing the ESC key, a confirmation for saving the configuration information is displayed. When adding a new array and if there is unused space in an array with an ID lower than that of the array to add, you can add a logical drive in the newly added array by creating a logical drive in that space and exhausting it. In the case shown at Step 2, you can create a logical drive in the second array "A02 by exhausting all the capacity of the first array "A01 and creating a logical drive. 4. Select "YES" to save the configuration. Select "YES" to the confirmation to save the configuration information. Selecting "NO" cancels the set configuration information. After the configuration information is successfully saved, the message Configuration is Saved. is displayed. Press any key

20 4.2. Deleting Arrays/Logical Drives Important MegaManager does not allow to delete only a specified array/logical drive when there are two or more arrays. Clear Configuration described in this section deletes all existing arrays/logical drives. 1. Select "Configure"-"Clear Configuration". The deletion confirmation menu Clear Configuration? is displayed after selection. 2. Select "YES" to delete all configurations. Select "YES" in the deletion confirmation menu to delete the configuration information. Selecting "NO" cancels deleting the configuration information. You can also delete arrays/logical drives in the "Objects"-"Adapter"-"Clear Configuration" menu

21 4.3. Initializing a Logical Drive MegaManager supports the following two ways of initializing a logical drive: - Initializing a logical drive by using the "Objects" menu - Initializing a logical drive by using the "Initialize" menu This section describes the steps for initializing a logical drive by using the respective functions mentioned above Initializing a Logical Drive by Using the "Objects" Menu 1. Select "Objects"-"Logical Drive". The logical drive selection menu is displayed after selection. 2. Select a logical drive. Selecting a logical drive in the logical drive selection menu displays the operation selection menu to the specified logical drive. 3. Select "Initialize". In the operation selection menu to the specified logical drive, select "Initialize". The initialization confirmation menu is displayed after selection. 4. Select "YES" to initialize the logical drive. Select "YES" in the initialization confirmation menu to initialize the specified logical drive. Selecting "NO" cancels initializing the logical drive. After selecting YES, the progress of the initialization is displayed. When the initialization is completed, the progress indicator displays "100%"

22 Initializing a Logical Drive by Using the "Initialize" Menu 1. Select "Initialize". In Management Menu, select "Initialize". The logical drive selection menu is displayed after selection. 2. Select a logical drive. In the logical drive selection menu displayed under "Check Consistency", select a logical drive to be initialized, and then determine it by pressing the Space key. After that, press the F10 key; the initialization confirmation menu is displayed for the initialization. 3. Select "YES" to initialize the logical drive. Select "YES" in the initialization confirmation menu to initialize the specified logical drive. Selecting "NO" cancels initializing the logical drive. After selecting YES, the progress of the initialization is displayed. When the initialization is completed, the progress indicator displays "100%"

23 4.4. Checking Consistency of a Logical Drive MegaManager supports the following two ways of checking consistency of a logical drive: - Checking consistency of a logical drive by using the "Objects" menu - Checking consistency of a logical drive by using the "Check Consistency" menu This section describes the steps for checking consistency of a logical drive by using the respective functions mentioned above Checking Consistency by Using the "Objects" Function 1. Select "Objects"-"Logical Drive". The logical drive selection menu is displayed after selection. 2. Select a logical drive. Selecting a logical drive in the logical drive selection menu displays the operation selection menu to the specified logical drive. 3. Select "Check Consistency". In the operation selection menu to the specified logical drive, select "Check Consistency". The Check Consistency confirmation menu is displayed. 4. Select "YES" to check consistency of the logical drive. Select "YES" on the Check Consistency confirmation menu to check consistency of the specified logical drive. Selecting "NO" cancels checking consistency of the logical drive. After selecting YES, the progress of the consistency check is displayed. When the consistency check is completed, the progress indicator displays "100%"

24 Checking Consistency by Using the "Check Consistency" Menu 1. Select "Check Consistency". In Management Menu, select "Check Consistency". after selection. The logical drive selection menu is displayed 2. Select a logical drive. In the logical drive selection menu displayed under "Check Consistency", select a logical drive to be consistency-checked, and then determine it by pressing the Space key. After that, press the F10 key; the Check Consistency confirmation menu is displayed. 3. Select "YES" to check consistency of the logical drive. Select "YES" in the Check Consistency confirmation menu to check consistency of the specified logical drive. Selecting "NO" cancels checking consistency of the logical drive. After selecting YES, the progress of the consistency check is displayed. When the consistency check is completed, the progress indicator displays "100%"

25 Referencing the Progress of Consistency Check 1. Select "Check Consistency" menu. In Management Menu, select "Check Consistency". after selection. The logical drive selection menu is displayed 2. Press the F7 key to reference the progress of consistency check. Press the F7 key while the logical drive selection menu is being displayed. After pressing the F7 key, the progress of consistency check is displayed. Pressing the ESC key after Step 2 displays the Abort Options menu. Select one of the options listed below if necessary: Abort Above Operation Aborts the consistency check. Go Back Without Aborting Operation Redisplays Management Menu indicated at Step 2, however, the consistency check continues running. View Progress Bars Again Redisplays the progress of the consistency check. It takes about 22 minutes to check consistency of an approximately 8-GB logical drive (our measurement)

26 4.5. Rebuilding an Array MegaManager supports the following two ways of rebuilding an array: - Rebuilding an array by using the "Objects" menu - Rebuilding an array by using the "Rebuild" menu This section describes the steps for rebuilding an array by using the respective functions mentioned above Rebuilding an Array by Using the "Objects" Menu 1. Select "Objects"-"Physical Drive". The HDD selection menu is displayed after selection. 2. Select an HDD in offline state. In the HDD selection menu, select an offline HDD whose status is indicated "FAIL", and then press the Enter key. After pressing, the operation selection menu to the specified HDD is displayed. 3. Select "Rebuild". In the operation selection menu to the specified HDD, select "Rebuild" menu. The Rebuild confirmation menu is displayed. 4. Select "YES" to rebuild the HDD. Select "YES" in the Rebuild confirmation menu to rebuild the specified HDD. Selecting "NO" cancels rebuilding the HDD. After selecting YES, the progress of the rebuild is displayed. When the rebuild is completed, the progress indicator displays "100%"

27 Rebuilding an Array by Using the "Rebuild" Menu 1. Select "Rebuild" menu. In Management Menu, select "Rebuild" menu. The HDD selection menu is displayed after selection. 2. Select an HDD which is offline. In the HDD selection menu, select an offline HDD whose status is indicated "FAIL", and then determine it as the HDD to be rebuilt by pressing the Space key. After that, press the Enter key; a confirmation dialog is displayed for the rebuild. 3. Select "YES" to rebuild the HDD. Select "YES" in the Rebuild confirmation menu to rebuild the specified HDD. Selecting "NO" cancels rebuilding the HDD. After selecting YES, the progress of the rebuild is displayed. When the rebuild is completed, the progress indicator displays "100%"

28 Viewing the Rebuild Progress 1. Select "Objects"-"Physical Drive". The HDD selection menu is displayed. 2. Select the HDD being rebuilt. On the HDD selection menu, select the HDD with "REBLD" indicated, and then press the Enter key. After pressing, the operation selection menu to the specified HDD is displayed. 3. Select "View Rebuild Progress". On the operation selection menu to the specified HDD, select "View Rebuild Progress". After selection, the progress of rebuilding the HDD is displayed. Immediately after rebuild is started and while the progress of the rebuild is displayed, pressing the ESC key displays the Abort Options menu. Select one of the options listed below if necessary: Abort Above Operation Aborts the rebuild. Go Back Without Aborting Operation Redisplays the operation selection menu indicated at Step 3, keeping the HDD being rebuilt. However, once this option is used, the Abort Options menu cannot be displayed again. View Progress Bars Again Redisplays the progress of the rebuild. It takes about 15 minutes and 30 seconds to rebuild an approximately 8-GB logical drive (our measurement)

29 4.6. Setting/Cancelling a HotSpare Disk Setting a HotSpare Disk 1. Select "Objects"-"Physical Drive". The HDD selection menu is displayed. 2. Select an unused HDD to be configured as a HotSpare disk. On the HDD selection menu, select an unused HDD to be set as a HotSpare disk (an HDD which has not been used for any existing array), and then press the Enter key. After pressing, the operation selection menu to the specified HDD is displayed. 3. Select "Make HotSpare". In the operation selection menu to the specified HDD, select "Make HotSpare". After selection, the HotSpare disk setting confirmation menu is displayed. 4. Select "YES" to configure the HDD as a HotSpare disk. Select "YES" in the HotSpare disk setting confirmation menu to set the HDD as a HotSpare disk. Selecting "NO" cancels setting the HDD as a HotSpare disk

30 Cancelling a HotSpare Disk 1. Select "Objects"-"Physical Drive". The HDD selection menu is displayed. 2. Select an HDD set as a HotSpare disk. In the HDD selection menu, select a HotSpare disk with "HOTSP" indicated, and then press the Enter key. After pressing, the operation selection menu to the specified HDD is displayed. 3. Select "Fail Drive". In the operation selection menu to the specified HDD, select "Fail Drive". After selection, the HDD offline setting confirmation menu is displayed. 4. Select "YES" to unconfigure the HotSpare HDD. Select "YES" on the HDD offline setting confirmation menu to cancel the HotSpare configuration of the HDD. Selecting "NO" cancels cancellation of the HotSpare HDD

31 4.7. Miscellaneous Referencing/Modifying the N F/81F Disk Array Controller Setting To show the information about the N F/81F disk array controller, select "Objects"-"Adapter" in Management Menu. Modify the parameters, if necessary Referencing/Modifying a Logical Drive Setting 1. Select "Objects"-"Logical Drive". After selection, the logical drive selection menu is displayed. 2. Select a logical drive. Selecting a logical drive displays the operation selection menu to the specified logical drive. 3. Select "View/Update Parameters". In the operation selection menu to the specified logical drive, select "View/Update Parameters". After selection, the information on the specified logical drive is displayed. Modify the parameters, if necessary

32 Referencing Information on an HDD 1. Select "Objects"-"Physical Drive". The HDD selection menu is displayed. 2. Select an HDD. The operation selection menu to the specified HDD is displayed after selection. 3. Select "View Drive Information". In the operation selection menu to the specified HDD, select "View Drive Information". After selection, information on the specified HDD is displayed