NO! Remember that a copypool is a complete copy. So everything that is offsite 
is onsite. 

TSM does not need the offsite tapes to reclaim them! 

But you are correct: You could send a tape out Monday, 10% used (90% percent 
reclaimable). Reclaim it during the day (Monday), and ask for it back Tuesday. 
With LTO tapes this can be mitigate by using a high reclaim, like 90%, or 
10-to-1. Or run reclamation less often, like every second day. If you don't run 
reclamation you could have 100GB tape with 1KB used, stuck in your vault.

Also make sure that you don't use collation on a copy pool, unless this is what 
you REALLY want. In general I don't think you want to you. Not using collation 
will keep fewer tapes, more full. Preventing tape thrashing, if you like.

Miles


Hmm, I saw a suggestion in the TSM 4.2 admin guide to disable reclamation
for the copy stgpool (specifically) to avoid a situation where tapes gets
sent off site and then it wants them for the reclamation.

But of course, for the other stgpools, reclamation does make sense.

Much appreciated the pointers...big help, thanks!

-Dan Foster
IP Systems Engineering (IPSE)
IP Systems Engineering (IPSE)
Global Crossing Telecommunications

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Miles Purdy 
Miles Purdy 
System Manager
Farm Income Programs Directorate
Winnipeg, MB, CA
purdym AT fipd.gc DOT ca
ph: (204) 984-1602 fax: (204) 983-7557

"If you hold a UNIX shell up to your ear, can you hear the C?"
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