...of course I meant RECLAMATION and not MIGRATION... ;)

2008/12/9 Mark Stapleton <Mark.Stapleton AT cdw DOT com>

> When TSM tries to access a file for any purpose (restore, reclamation,
> etc.), it will ALWAYS try to use a copy of the file residing in a
> disk-based device class storage pool--even if the file isn't available
> (due to disk downage).
>
> --
> Mark Stapleton (mark.stapleton AT cdw DOT com)
> CDW Berbee
> System engineer
> 7145 Boone Avenue North, Suite 140
> Brooklyn Park MN 55428-1511
> 763-592-5963
> www.berbee.com
>
>
> > -----Original Message-----
> > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> > Of Stephan Boldt
> > Sent: Tuesday, December 09, 2008 7:47 AM
> > To: ADSM-L AT VM.MARIST DOT EDU
> > Subject: Re: [ADSM-L] Reclamation
> >
> > Just a dumb question: Is there a possibility to do the reclamation of
> > the
> > primary tape pools via the cached data in the disk pools?
> >
> > kind regards,
> > Stephan
> >
> > 2008/12/8 Allen S. Rout <asr AT ufl DOT edu>
> >
> > > >> On Mon, 8 Dec 2008 12:27:46 -0500, "Lepre, James"
> > <jlepre AT SOLIXINC DOT COM>
> > > said:
> > >
> > > > I have a question on how reclamation works.  I have a small
> library
> > > > with 24 slots and 2 Drives.  When I start reclamation say at 90%
> it
> > > > puts in tape 1 and then put in another tape to reclamate to.  It
> > > > then ask for tapes that are not in the library so I am constantly
> > > > checking in and out tapes to reclamate this one tape.  Could
> > someone
> > > > tell me how the process actually is supposed to work maybe I am
> > > > doing something incorrect.
> > >
> > > In general, you'll expect a full volume to have at least two partial
> > > files (aggregates) on it: the one hanging off the beginning, and the
> > > one hanging off the end.
> > >
> > > You may have several others, too, if you are constricted (as it
> > > appears you are): Every time you finish a volume, there's a partial
> > > file there.  It's possible the "other" halves might get
> > > disproportionately collected.
> > >
> > > So, the checking in and out is to be expected.
> > >
> > >
> > > How many tapes in your collection?  You may be able to make a case
> > for
> > > acquiring a larger library.  This can be exceptionally attractive if
> > > you can point out that now you have to be onsite to service
> restores.
> > > If you have all your data in the library, most activity can go
> > > unattended.
> > >
> > > I view handling-by-humans as the largest risk my tapes go through.
> > > Minimizing those occasions is well worth it, in the long run.
> > >
> > >
> > > - Allen S. Rout
> > >
> >
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> > 12/8/2008 6:16 PM
>