ADSM-L

Disk storage pools

2002-05-08 00:24:42
Subject: Disk storage pools
From: Paul Ripke <pripke AT CSC.COM DOT AU>
Date: Wed, 8 May 2002 14:58:05 +1100
Hiya,

I'm running TSM server 4.2.1.15 under Solaris 2.8/8/5.8, using
Veritas Volume Manager RAID5 raw devices for disk storage
pools. This works great, and the I/O rate sustained is
impressive. However, I've noticed that about ~15% of the
writes result in read-modify-write operations. I was
wondering what write-size TSM uses for disk storage pool
volumes so I can tune the stripe size and eliminate that
overhead.

Cheers,
Paul Ripke
UNIX/OpenVMS Sysadmin
CSC, Port Kembla 2502, NSW, Australia
Phone +61 2 4275 4101
Fax +61 2 4275 7801
Mobile +61 419 432 517
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