ADSM-L

TSM Reclamation and large tape formats

2005-06-09 15:48:40
Subject: TSM Reclamation and large tape formats
From: "Burton, Robert" <robert.burton AT RBC DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 9 Jun 2005 15:48:21 -0400
  We are being pushed to improve our reclamation thresholds in order to drive 
down the amount of tape volsers required...

We are using STK 9940 tape drives and get 300GB - 1 TB of data stored on each 
tape.  I'm trying to explain that with the larger tape sizes it is much more 
difficult to keep the reclamation numbers at the same target levels as with the 
smaller tape volumes.

We have 2 tsm servers / 50 lan-free clients / approx 2 TB of disk pool and we 
backup 8 TB nightly...

Between copypool and migration we have limited reclamation cycles...

Just inquiring on what the rest of the tsm community is experiencing in regards 
to tsm reclamation with large tape...

thanks 
Robert Burton 
Enterprise Storage Network Analyst 
Royal Bank of Canada 
315 Front St West 
Toronto, On, M5V 3A4 
( 416-348-3849 )
+ Robert.Burton AT rbc DOT com
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