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Conference cookie::raid_software_for_openvms

Title:RAID Software for OpenVMS
Notice:READ IMPORTANT NOTE IN 3.15, V2.4 SSB Kit in 3.176
Moderator:COOKIE::FROEHLIN
Created:Fri Dec 03 1993
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:341
Total number of notes:1378

328.0. "'Swapping' RAID5 members" by ESSB::JNOLAN (John Nolan) Mon Mar 17 1997 15:12

    
     I've to upgrade the Firmware in all the RZ29's in a SW RAID-5 set,
    I was going to take this oppertunity to 'swap' some narrow drives
    for wide ones. The alternatives I have are
    
      1. Fail a member out and just reconstruct (takes a while to do the
         whole array).
    
      2. Unbind the array and BACKUP/PHYSICAL narrow drive(s) to wide
         drive(s).
    
      3. Put the 'array' out to tape and recreate with wide drives and
         restore from tape
    
     My preference would be 2, will it work?
    
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328.1COOKIE::FROEHLINVMS...riding into the setting sun!Mon Mar 17 1997 16:469
    John,
    
    as long as the old and new drives are absolutely identical in geometry
    (check with SHOW DEVICE/FULL tracks, cylinders, total blocks) your
    method 2 should work.
    
    Do the swapped disk keep the exact same device names?
    
    Guenther
328.2Same unit numbersESSB::JNOLANJohn NolanTue Mar 18 1997 09:053
    
     Yes  I'm just replacing RZ29-VA's with RZ29B-VW's and using the same
    device names