Performance is good when writing from disk to tape?  How good?  When I hear
of this I suspect driver issues.  I know on Win2K driver selection is
paramount when having a performance problem with tape.

Kelly J. Lipp
STORServer, Inc.
485-B Elkton Drive
Colorado Springs, CO 80907
lipp AT storsol DOT com or kelly.lipp AT storserver DOT com
www.storsol.com or www.storserver.com
(719)531-5926
Fax: (240)539-7175


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
Remeta, Mark
Sent: Tuesday, December 24, 2002 10:08 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Slow tape to tape performance...


do you have tape drive compression and client compression turned on?
I've seen this before with AIT drives trying to compress already compressed
data...



-----Original Message-----
From: Wheelock, Michael D [mailto:Michael.Wheelock AT INTEGRIS-HEALTH DOT COM]
Sent: Tuesday, December 24, 2002 11:33 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Slow tape to tape performance...


Hi,

I am getting agonizingly slow (~1GB/hr) performance on tape to tape copies
(such as during reclamations).  Is this normal?  This is a new install,
fairly fresh with some basic policies and copy groups.  The server is an AIX
5.1 ML02 7026-M80 with 8GB RAM.  The tape library is an IBM 3584 with 8 FC
attached LTO drives.  TSM is at 5.1.5.4.  Any ideas would be appreciated.

Michael Wheelock
Integris Health of Oklahoma

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