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
> >
> 
> No virus found in this incoming message.
> Checked by AVG - http://www.avg.com
> Version: 8.0.176 / Virus Database: 270.9.15/1838 - Release Date:
> 12/8/2008 6:16 PM