If you are trying to get TSM to move data to a new format of tape, and
it's a different DEVCLASS, then you need to set this up with Migration
rather than Reclamation. It's not difficult to set up, and it's easy to
control. I moved 100tb of data from SDLT to LTO4 mostly by migration,
over a several week period, and it was effortless after I set it up with
schedules to control thresholds etc. There were only a few volumes left
that I had to do MOVE DATA on.

It will still have the effect of reclamation, of squeezing out the holes
left behind by inactive expired files.

Roger Deschner      University of Illinois at Chicago     rogerd AT uic DOT edu
               Academic Computing & Communications Center
===== While it may be true that a watched pot never boils, the one =====
==== you don't keep an eye on can make an awful mess of your stove. ====
========================= -- Edward Stevenson ==========================


On Mon, 23 Nov 2009, Howard Coles wrote:

>If you are trying to get TSM to move the data to a new Tape Format
>(increased density and/or tape type) you would be better served to run a
>move data command.  I'm assuming you have created a new storage pool if
>you've gone to a higher capacity drive type.  However, 99% means that
>the tapes have to be 99% reclaimable, or only have 1% utilization.
>
>Have you tried bumping the reclaim threshold down to say 90% and see
>what happens?  Also, I'm assuming that TSM uses the new drives just fine
>for other types of processes (such as migration, storage pool backups,
>etc.)?
>
>Just so there's clarity you might want to give a general idea of how the
>old and new storage pool situation is laid out, and what you mean by
>"upgraded tape drives"  (could just mean newer drives of the same device
>type).
>
>See Ya'
>Howard
>
>
>> -----Original Message-----
>> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
>> Of Maura Adams
>> Sent: Monday, November 23, 2009 1:36 PM
>> To: ADSM-L AT VM.MARIST DOT EDU
>> Subject: [ADSM-L] Reclamation Processing won't start
>>
>> We recently upgraded our tape drives.  I have verified that the new
>> device class has a sufficient # of mount points, we have plenty of
>> scratch volumes assigned to the tape pool.  I run a query and see
>where
>> we have 36 possible tape returns running reclamation at 99%.  I also
>> verified volumes were in readw status.
>> I manually adjust the stg pool to desired reclamation value and
>nothing
>> happens.  No error message ................ no mention of reclamation
>> in
>> the actlog ....... zippo.  Tried both an onsite tape pool and offsite
>> copypool.  Frustrating.   What am I missing?
>>
>> thanks,
>> M
>