Hello, everyone.

We run a TSM server v 5.1 level 5.4 on an AIX 4.3 machine. The AIX
admins here have been upgrading their other servers to AIX v 5.1 with
the 32 bit kerenl. We've found that on the AIX upgraded machines that
TSM restores and HSM recalls from tape are performing horribly, with a
transfer rate of 200k every 20 - 30 seconds. To confuse the issue more,
we've found that with restores work with test files that were backed up
and then immediately restored, without being flushed to tape. Backups
perform as they always have. Restore performance is great on machines
that have not had the OS upgraded.

We've tested one server before and after the upgrade and saw the
performance drop with the upgrade. The servers are running TSM clients
at 5.1.0.6. Has anyone seen these symptons before?
--
Michael Lambert <mlambe7 AT lsu DOT edu>