ADSM-L

3590B1A -> 3590E1A - Repairing VCR data

2015-10-04 17:38:08
Subject: 3590B1A -> 3590E1A - Repairing VCR data
From: Michel <mhuber AT OPENMIC DOT COM>
To: <ADSM-L AT VM.MARIST DOT EDU>
> There have been several posts about the ANR8820W error, "repairing VCR
> data" after upgrading from 3590 B drives to E drives.  However, I
> haven't seen a solution posted yet.
>
> Given that some posters have reported the ANR8820W errors at current
> levels of 3590E
> microcode, while some are not experiencing the errors, I suspect that
> the problem lies in
> the microcode level of the *source* 3590B tape drive(s).
>
> I have a customer who is experiencing the ANR8820W errors *each* time a
> tape written by a 3590B drive is read by a 3590E drive.  Since the VCR
> data repair takes from 10-15
> minutes per tape, the overhead associated with restoring a node
> requiring 100 tape mounts
> (they're not using collocation) would increase restore time by almost 17
> hours!  If this
> problem cannot be resolved, chances are very good that ADSM will no
> longer be used at
> this account.
>
> I'm requesting information from people who have experienced this error.
> What were the
> microcode levels on your 3590B tape drives?  Have you found a workable
> solution?
>
> I'd appreciate assistance with this.  We're upgrading the tape drives (B
> and E) to current
> microcode levels tomorrow, and if this doesn't resolve the problem, I'll
> open a PMR with
> IBM hardware support.  I'll post any info we get.
>
> Thanks!
> Michel Huber
> Gresham Computing, PLC