Hello!

Matthew Temple wrote on 2003-06-04 16:01:03 -0400:
>
> Frank,
>
>       I missed the beginning of this thread.   Did it ever work?
Oh, yes, it works, but not all the time...  It happens sometimes
that the mentioned errors occur, but not permanently. Last night for
example the backup processes were running fine without any error.


>       I've had similar problems on two extended occasions with a
> Qualstar library and three sony AIT-2 drives.   The card is an adaptec
> (I'm not near the machine) 2940U2.   The first time occurred after a move.
> The tape in the library, would go into a hung state when trying to verify
> label.
ACK, same was here.

>   first it was all three drives.   Then I messed around with
> termination and changed the scsi cable and the problem reverted to
> just one drive. -- SCSI resets and timeouts.   Then I switched
> SCSI cards (same card, just a different one.)   I took a DDS tape drive
> off the internal channel.   Same result.   Then I reattached the
> internal tape drive.   Everything worked.   I don't know why.
> It was all so ... SCSI.   SCSI cables have always been mysterious to me --
> we've had RAID stacks that worked when their cable was curved to the left
> but now when curved to the right.

You don't want to know how often i changed the cabeling on my system
the last weeks :-))

>       1. Keep the cables as short as possible.
>       2. Is everything REALLY terminated correctly (how about
>               the jumpers on the devices?  TERM-POWER?)
>       3. Try different cable positions.
>       4. The following is MOSTLY true -- It's probably NOT your card.
>                       (except when it is 8-)   )
Yep, and i think that i used to work according to these rules... we
checked cables and termination more than a dozen times these days,
but it's hard to check for me when it comes to hardware - i'm more
the software guy ...

With kind regards,

        Frank Altpeter

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