Hi,

Thanks for the info, what about logging for file systems ? does it
impact on the performance ?

Marco.


Lee, Gary D. wrote:

We have tsm server 4.2.1 running under solaris 2.8 on a sun 3500.

Had plenty of memory (2gb) and a reasonable amount of disk.  However, 
performance even with a gigabit ethernet was less than adequate.

Acting on a couple of replies received from this list, I modified the vfstab and changed 
the database, log, and stgpool file systems to "forcedirectio".

Throughput went up by a factor of five or more for almost all clients.  Clients 
with backups of a few large files, showed an increase of fifteen times 
throughput.

Thought this info might help someone.


Gary Lee
Senior Operating Systems Analyst
Ball State University
phone 765-285-1310