Generally, I always run at 50%. 2 tapes into 1. I have been known to
reclaim at 25% when worrying about tape levels over a weekend...

You can run multiple reclamations per storagepool.. but theres a bit of
legfowrk involved. Reclamations are really just move-data's, so you
could start multiple move-data's based on tape %Util. .. You end up with
several tapes you are reclaiming to, and if any of those don't fill past
50% you can reclaim then at the end.

I used to reclaim purely using my chosen order of tapes and move-data's,
as I didn't used to trust the order in which TSM picked the tapes it was
going to reclaim. It seemed to make sense to me to pick the least
utilised tapes first.


Matt.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Ian Hobbs
Sent: Monday, October 18, 2004 9:05 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: RECLAMATION

I would say go as low as you can without impacting other processes. Why
waste tape I always say <G>.

65% is not bad. I run at 50%.

The trick I have found is to get to a level where the percentage is
sustainable. If you can't get there, and tapes
are becoming an issue, either get more tapes or drives. Reclamation sure
can run a while on todays large
tapes.....<wish> I wonder when multiple reclaims can be run for a single
pool at once like migration or backup
</wish>

Also, if you are not getting enough tapes back, make sure expiration is
running to completion regularly.

On Mon, 18 Oct 2004 15:54:31 -0400, Lepre, James wrote:

>What is the IDEAL pct for reclamation, I use 65pct should I go lower
>
>-----Original Message-----
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
Of
>Hart, Charles
>Sent: Monday, October 18, 2004 3:51 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Re: RECLAMATION
>
>Here's one
>
>select count(*) from volumes where pct_reclaim>95 and
>stgpool_name='TAPE_DR_COPY'
>
>
>-----Original Message-----
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
>Richard Hammersley
>Sent: Monday, October 18, 2004 2:43 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Re: RECLAMATION
>
>
>James,
>
>Do a "query  volume" and look at the  "pct util" column for the tapes
>offsite.   Compare that value with the Reclamation Threshold for your
>pool.   If there are a lot of tapes that meet that threshold and they
>don't come back when they should then you should look to make sure the
>reclamation is running when it should and if it is running to
>completion.Reclamation Threshold
>
>
>Richard
>
>James Lepre wrote:
>
>>Hello All,
>>
>>
>>
>> I am having problem with reclamation.  Tapes are not being recycled
as
>>they should be.  For instance I used get back about 100 tapes per
week,
>>now I am getting back 16.  Any suggestions?
>>
>>
>>



Ian Hobbs
little_brutus AT rogers DOT com
=======================================================
"Never argue with an idiot.  They drag you down to their level then beat
you with experience."
-Dilbert


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