| Title: | RAID Software for OpenVMS | 
| Notice: | READ IMPORTANT NOTE IN 3.15, V2.4 SSB Kit in 3.17 6 | 
| 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 | 
    
     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?
    
| T.R | Title | User | Personal Name | Date | Lines | 
|---|---|---|---|---|---|
| 328.1 | COOKIE::FROEHLIN | VMS...riding into the setting sun! | Mon Mar 17 1997 16:46 | 9 | |
|     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
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| 328.2 | Same unit numbers | ESSB::JNOLAN | John Nolan | Tue Mar 18 1997 09:05 | 3 | 
|     
     Yes  I'm just replacing RZ29-VA's with RZ29B-VW's and using the same
    device names
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