To increase the cache hit, need to increase the bufferpool size.
If the buffer pool is increase too much the cache hit will drop rather than increase.
Since the cache hit is at 66.3, I would increase the buffer pool by 1GB and see how close we get to 98.0 .
There are two ways to increase the bufferpool.
1. Manually update the bufpoolsize in the dsmserv.opt file.
This requires that the TSM Server to be stop/restarted to recognize the update in the dsmserv.opt file.
2. Use the setopt command, this will append the update to the bottom of the dsmserv.opt file.
setopt bufpoolsize #
Once we get the cache hit at or above 98.
Turn on the selftunbufpool so that the TSM Server will automatically increase the buffer pool size if needed.
To reset the counters from which the database BUFPOOL statistics are calculated the command to use is 'RESET BUFPOOL'.
Here is a link to the TSM 5.5 Admin Guide
http://publib.boulder.ibm.com/infoc...xn.doc/anragd55603.htm?path=2_1_6_2_6_3#atdbp
Good Luck,
Sias
