Gerald Wichmann wrote:
>
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> How does TSM use a tape library with multiple tape drives? For example, i=
> f I
> have a tape library with 2 tape drives and a migration kicks off, will it
> mount a tape in each tape drive for better throughput and migrate to two
> tapes at once?
Set migproc=2 on the storage pool and it will, yes.

>
> During reclamation does it mount a scratch in one drive and the tape bein=
> g
> reclaimed in the other and go straight from tape to tape?
Yes.

>
> What happens if someone kicks off a restore that requires a tape and both
> tapes are being used (if they=92re both being used) as in the above insta=
> nces?
> I=92m assuming the higher priority process (restore) halts the
> migration/reclamation like it does on a single drive library and grabs a
> drive=85?
Yes but - if a tape is being reclaimed, you may see a forty-minute wait
before TSM gives up the drive!  Better to leave one drive free for
restores.

>
> I guess overall I=92m just wondering how TSM takes advantage of the 2nd d=
> rive
> in the library.. I=92m familiar with libraries with 1 drive up until this
> point but will soon work with one with 2..
TSM will be happier - and so will you.


>
> Gerald Wichmann
> RS Engineer
> Sansia System Solutions
> 408-844-8893 work
> 408-844-9801 fax

--
Mr. Lindsay Morris
Mr. Lindsay Morris
Gresham Enterprise Storage
lmorris AT openmic DOT com
606-253-8000