[lug] SCSI Question

[Zan Lynx]

On Tue, 2007-11-06 at 16:03 -0700, George Sexton wrote:
> I'm having some problems with a SCSI RAID system and was hoping someone 
> here might have some insights.
> 
> The system is using an Adaptec 2110 SCSI RAID controller (firmware is 
> current).
> 
> Attached to it are 6 SCSI drives on 9 Connector SCSI Cable
> 
> Conn. 0 - Adapter
> Conn. 1 - Not Connected
> Conn. 2-7 - Hitachi / IBM 36GB SCSI HD
> Conn. 8 - Active Termination
> 
> The problem is that drive 4 is showing as failed. I replaced drive 4 
> with a new unit, and rebuild still fails on drive 4. I'm running 
> badblocks on the old drive 4 right now, and it's looking OK.
> 
> I thought there might be power problems, so I added an extra power 
> supply to run drives 4 and 5 but rebuild still fails on drive 4.
> 
> At this point, I think I have a cable/termination issue.
> 
> Should I enable the TERMPWR jumper on drive 5?
> 
> Should I just get a new cable?
> 
> The Adaptec controller is very un-friendly, and I don't want to make any 
> mistakes if I can avoid it.

Probably a silly question, but did you try the drive on Connector 1?
Would be worth it to eliminate the possibility of a bad connector.
Believe it or not, not every cable is made perfect. :)
-- 
Zan Lynx <zlynx at acm.org>
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