OK, I have just done another test and here are my findings.

TSM 4.2.2.12 running on a Solaris E250, 400Mhz, 1GB, 50GB backuppool on
RAID5 array, 8500MB DB and LOG on separate internal disks (TSM mirrored).

I just backed up a 100Mb file via a client on the same machine as the
server. Data transfer rate 1.5MB/s. Terrible. File was on the same RAID 5
array as the backuppool. I then restored that very same file to the very
same location and got a transfer speed of no less than 51MB/s. Much better!

So, could the problem lie with my backuppool for some reason, and if so,
how would I know. We do have caching turned on if that makes any
difference.

Any ideas on this one?

Thanks to all

Farren Minns - John Wiley & Sons Ltd