> "We too have DD880 and NW 7.5.2, and we see the exact same thing as you do,
> these annoying error messages and tapes stuck inside virtual tape drives.
>
> The best advise I can give, based on my own experience is, like is has been
> said here on the list, to create and label a lot of tapes ind advance.
> Empty tapes does not take up any space, or alt least not a measureable
> space, on the DD880, the only "problem" is that we as humans tend to get
> confused.
>
> In our case, we have two DD880 equipped with max storage capacity at two
> different locations. On each DD880 we have two virtual libraries, one that
> are being replicated to the other site, and one that not are supposed to be
> replicated.
> The VTL's that don´t get replicated are populated with small tapes, 100 GB
> in order to make it easier to free up space.
>
> We too are running target and parallism =1 on the virtual drives as this is
> the recommended setting, and when we started using the DD880´s we created a
> lot of drives based on the daily max session, but now we only have approx 15
> drives enabled pr. VTL, the remaining drives ar not removed, the are in
> service mode and can be enabled if we see too many stuck tapes.
>
> I do not think it is a matter of persistend naming as we have the same issue
> on both DD880, and one is with persistent naming, and the other is not.
> Timming could be an issue, but then again, we have tried with a lot of
> different settings and do not see any noticeable difference.
>
> This is proberly not an isolated DataDomain issue as we had the same issue
> on two EMC EDL´s in the past.
> We have decided to ignoring the error messages for now and see if an upgrade
> of Networker will make any difference. "
>
Thanks Ole, we too have chosen to ignore the error messages, but its
problematic when tapes get stuck in drives. Our former EDLs did not do this. I
really think it has something to do with sessions = 1 and networker not being
designed to run 1 session per tape.
thanks
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