2nd Failed SCSI Drive in 2 Weeks

Hello Managers:

Tru64 4.0G AlphaServer 2000 and I have ran into problems

Last week we had power go down in the computer room. When power was restored I 
noticed that I had a hard drive go down. It had a fault light on it. Member 1 
on a raid-5 4 member set.

I put in my spare drive and the system auto rebuilt the drive.
Since it was under contract I got another drive to replace my spare.

On Sunday we had another power outage (the UPS is old 1/2 size of the computer 
room) and I had a failed drive again. Same member, same raid set, same 
rebuild.

Is there anything else I need to check to see why this keeps on happening?

***** Physical Device Information for xcr0 *****

Channel,                                           Wide/     Controller
Target:   Vendor:   Description:       Firmware:   Narrow:   Status:
-----------------------------------------------------------------------
 <0,0>    COMPAQ    BB00913466         3B07        W         OPT
 <0,1>    COMPAQ    BB00913466         3B07        W         OPT  <-- this was 
the failed drive 2 weeks in a row.
 <0,2>    COMPAQ    BB009135B4         B017        W         OPT
 <0,3>    COMPAQ    BB00913466         3B07        W         OPT

SWXCR xcr0 error counters:

RAID Array 200 Controller Family Information Utility V1.03
Copyright (c)1997,2000 by Compaq Computer Corporation, all rights reserved.


***** Controller Physical Device Error Counts for xcr0 *****

Channel,      Parity       Soft         Hard         Misc
Target:       Errors:      Errors:      Errors:      Errors:
----------------------------------------------------------------
 <0,0>          0            0            0            0
 <0,1>          0            0            0            0
 <0,2>          0            0            0            0
 <0,3>          0            0            0            0

SWXCR xcr0 controller status:

RAID Array 200 Controller Family Information Utility V1.03
Copyright (c)1997,2000 by Compaq Computer Corporation, all rights reserved.

***** Status Check Summary for xcr0 *****

   FAILED DISKS FOUND: 0
   DEAD LOGICAL DRIVES FOUND: 0
   DEGRADED LOGICAL DRIVES FOUND: 0

   STATUS FROM LAST REBUILD/PARITY CHECK ATTEMPT:
      No REBUILD / PARITY CHECK in progress, last completed without error


-- 
Ron Bramblett
Systems Administrator
Fuller Brush Company