ADSM-L

Re: Errors on 3590 K tapes

2003-03-05 15:11:15
Subject: Re: Errors on 3590 K tapes
From: Thomas Denier <Thomas.Denier AT MAIL.TJU DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 5 Mar 2003 14:19:20 -0500
> Sounds a lot like what I was seeing when we got our "new to us" 3590E1A
> drives.
>
> The problem was the microcode level. It was way behind and caused all
> kinds of grief. 2/3 of our new tapes were unlabelable. The drive would
> load the tape and spin for ever until it timed out.
>
> Once the microcode/firmware was upgraded, problems went away. Went back
> and relabeled tapes that previously were unlabelable.

We have, as far as I can tell, solved our problem. We had to increase
the missing interrupt time for the 3590 drives. If an I/O operation is
pending for longer than the missing interrupt time, OS/390 will decide
that the operation failed.

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