On Mon, 29 Jul 2002, Donaldson, Mark wrote:

> I get the Error 213 (Storate Unit Not Available) way too frequently.  It
> often occurs on weekends, usually when my offsite duplication process is
> occurring.
>
> My best guess is that the duplication process ties up the drives in a way
> different from the NB scheduler, so when the drives are busy with
> duplication, the scheduled Full or Incremental is not queued, it errors out
> with this error.  Can somebody comment on this?

I can't comment on _why_ it happens, but we did see exactly the same
during duplication. Every ten minutes, a 213 was reported. Until the
scheduling attempt happened to coincide with duplication waiting for a
new tape. At which point presumably one of the tape drives appeared to be
free (in some sense). Then the backups all got queued and run, while the
duplication waited ... This was on 3.4 on Sol 8. Due to a change in the
way we run things, this ceased to be a problem for us, so I never pursued
it.

> I have two storage units built, one is an on-demand-only disk pool and the
> other is my tape pool (4xDLT-7k).  This is NB 3.4.3 on Sol 2.6.  The
> class/policy that has the most frequent errors is set to us "Any Available"
> as a storage unit.
>
> -Mark

HTH,
 Richard