[SunHELP] E450 IBM Disk Problems

[Paul Dlug]

As a followup:

When I put an IBM drive in and run format, I get the following:

Searching for disks...WARNING: /pci at 6,2000/scsi at 1/sd at 0,0 (sd30):
        disk not responding to selection

WARNING: /pci at 6,2000/scsi at 1/sd at 0,0 (sd30):
        disk not responding to selection

Which repeats a few times, then format shows the disk as:
6. c3t0d0 <drive type unknown>
          /pci at 6,2000/scsi at 1,1/sd at 0,0



Paul Dlug wrote:
> 
> I have an interesting problem that hopefully someone can help solve...
> 
> We have an E450 that started crashing every few weeks, then began
> crashing every few minutes one day. Core dumps on some crashes showed
> scsi errors, other crashes showed "dvma read" errors, and yet others
> simply showed a panic.
> 
> Our hardware vendor replaced the system board, backplane and scsi
> controller. They reported that 3 of our disks are dead. Not believing
> the amazing odds of 3 disks failing at once we did some further
> investigation. There are 4 Fujitsu 9gb disks on the 4port backplane,
> they work without any problems. Any IBM 9gb HD plugged into the 8port
> backplane refuses to be recognized. The light comes on indicated it's up
> and attached but it doesn't show up in a "probe-scsi-all" or format. A
> Seagate 9gb drive works flawlessly. The IBM drives are a mixture of our
> existing drives as well as brand new replacements from our vendor. None
> of them seem to work.
> 
> Seems like a strange problem, our hardware vendor is reporting that
> they're seeing the problem on a E450 they have also. Is there something
> we're missing?
> 
> Thanks,
> Paul
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