Hi Steve,
i think ist better to use the client cpu for that task to save disk space
and cpu at the tsm server. 
That also reduces networkload for backup and restore.
We use compression at the client on all tsm clients including TDP for SQL
for a long time.
The load during backuptime is typical low, so we can use the cpu for that
task without problems.
We are quite satisfied with the performance of that solution.

Regards 
Stefan Holzwarth

-----Ursprüngliche Nachricht-----
Von: Steve Bennett [mailto:steve_bennett AT ADMIN.STATE.AK DOT US] 
Gesendet: Dienstag, 21. September 2004 19:11
An: ADSM-L AT VM.MARIST DOT EDU
Betreff: disk storage pools and windows compressed file systems


Have any of you used disk primary storage pools which use windows
compressed file systems? Comments on performance, etc?

We are investigating use of a multi TB raid5 array to use as a buffer
between our local primary disk pool and the tapepool. Have seen the
posts regarding file vs disk device classes but what about compression?
Good, bad, etc.

Win 2000 sp4 with TSM server 5.2.3.2

--

Steve Bennett, (907) 465-5783
State of Alaska, Enterprise Technology Services, Technical Services Section