Please could someone advise me on the following issue we have with tsm.
I am a TSM novice and would appreciate some pointers etc.
 
Environment :  TSM 4.2.0  AIX4.3.3 ML09 Server and Client on same Server
using Sharedmem
 
2 Stgpools defined diskpool and tapepool 
 
we have created a diskpool on RAID5 and created random access volumes
Total Diskpool size is 150GB. Our nextpool is tapepool for migration
upon high thresholds being reached.
 
We have compression turned off on the client  and set the selftune
parameters in dsmserv.sys
SELFTUNEBUF 
SELFTUNETXN
 
 
Issue:  IF we initiate a client backup using sharedmem to the diskpool,
it seems to take the same time as it does to backup the client straight
to tapepool. I would have thought the diskpool access
would be quicker ?
 
The Diskpool is located on direct fibre attached storage with large
read/write cache. The tapepool
is SCSI attached ATL library with 2 drives
 
Any suggestions or pointers to increase the throughput to a respectable
level would be appreciated.
 
kind regards
steve freeman
sfreeman AT acrlimited.co DOT uk