Multiple Fixed Disk Drive Replacement (RAID Array)

Multiple Fixed Disk Drive Replacement (RAID Array)

Use the following procedure for fixed disk replacement under 8641 ECA002, which provides for the replacement of specific 2.25 GB fixed disk drives. Refer to RETAIN record # H13646 for important additional information. This process may also be used any time multiple fixed disks are being replaced in a RAID Array.

  1.  Keeping track of which drives are located in which bays.
  2.  Have a backup copy of the current RAID configuration.
  3.  The drives might have been swapped multiple times. Always inspect the  connectors for damage.
  4.  If the fixed disks are being replaced due to suspected STICTION  problems (the drive head is bound to the drive disk), the main Idea is  not to power-off the server. If the IBM F/W Streaming RAID Adapter  Option Diskette is at version 2.3, it is strongly recommended that version  2.22. be obtained and used during this procedure. Version 2.3 turns off  all the fixed disks the array during the rebuild process. This will expose  the remaining drives to possible stiction. Use version 2.3 after all  drives have been replaced.

  1.  Make a Chart of Bays 1 through 6 and write in each bay the original  disk drive Serial Number and the New disk drive serial number for that  particular bay.
  2.  While still installed in the system, place stickers on the drives  indicating what bays they are in. Do the same to the new drives once they  are installed.
  3.  Insert the IBM F/W Streaming RAID Adapter Option Diskette Version 2.22  into the default diskette drive (Do not use Version 2.3)
  4.  Press Ctrl+Alt+Del to soft boot the system, then, select  'Advanced Options'.
  5.  Select 'Backup Configuration to Diskette' from this menu.
  6.  Insert a blank diskette into drive A and put in a filename for this  backup. The default filename is 'config'. If you use the same backup  diskette for more than one system, be sure to give each system a different  filename and keep track of the specific filenames.
  7.  Exit the 'Advanced Options' menu, then, select 'View  Configuration' from the 'Main Menu'.
  8.  If applicable, identify which bay contains the hot spare drive.
  9.  Pull the Hot Spare drive out of its bay, then, exit out of 'View  Configuration' and the 'Main Menu'.
  10.  Press Ctrl+Alt+Del When prompted, press Y to  update the configuration with the HSP bay as 'DDD'.
  11.  You are now ready to pull out the first drive to be replaced. The  first drive to replace should be the drive suspected of having the highest  probability of stiction. If there is not a SUSPECT drive, then choose an  order you would like to replace them in, such as Bays 1, 2, 3, 4,etc. Just  remember the replacement order. Check off the bays on your chart after  each drive has been successfully replaced.

    NOTE:   Remember, the hot spare drive is pulled out first and is left  out during replacement/rebuilding of the other drives. It  then becomes the last drive replaced and its status turns  to HSP. The hot spare doesn't require rebuilding (it's a spare).

  12.  In the order you have chosen, do the following for each  drive being replaced.
    1.  Pull out the drive and reboot the RAID Support Diskette. "Press Y to update configuration as DDD.
    2.  Press Ctrl+Alt+Del to reboot the system.
    3.  Install the new drive into the bay.
    4.  Select 'Rebuild Drive' from the 'Main Menu', then, select  'Replace Drive'.
    5.  Highlight the correct DDD Drive in the bay you are replacing. The  system will start the drive. After starting successfully, the drive status  will change from DDD to OFL.
    6.  Select 'Rebuild Drive' from the 'Rebuild Menu' (The  'Rebuild Menu' is a selection on the 'Main Menu'.)
    7.  Highlight the correct OFL Drive in the bay you are rebuilding. The  system will rebuild the drive from 0 to 100%. After the system has  successfully rebuilt the drive it will change the drive from OFL to ONL and  save the configuration.
  13.  If a fatal error occurs during the above procedure, replace only the  original drive back into the system that has not been rebuilt successfully  yet. Then, do the following to restore the configuration from diskette.

    1.  Insert the Option Diskette into the default diskette drive,  then, press Ctrl+Alt+Del
    2.  Select 'Restore Configuration' from diskette on the 'Advanced  Options Menu' from the 'Main Menu'.
    3.  Remove the 'Option Diskette' and insert the diskette with the  backup configuration into the default diskette drive and type in  the filename for that particular system. Then, proceed replacing and  rebuilding drives wherever you left off.

  14.  If during the restoring from diskette an 'Adapter Is Not Responding  To Controller Commands' message appears, do the following:

    1.  Press Ctrl+Alt+Del and restore the configuration from  the backup copy of the 'RAID Support Diskette' again until it comes  back and says restoration completed successfully.

  15.  After all drives are replaced and rebuilt successfully, power-off, then  power-on the server.

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