I am experiencing a very long expiration time with TSM v6.3.3 and GPFS v184.108.40.206.
We used mmbackup to backup some ~50TB file systems, with many small files (up to 50M).
The number of files expired per day is high, sometimes up to 1 M.
We run mmbackup with up to 3 helper nodes so the total number of parallel dsmc sessions is 4.
According to the TSM support the very long expiration time (up to 12 hours) is caused by the fact that mmbackup runs in parallel multiple sessions for expiring files for the same file system, and this produced row lock contention on the TSM db.
Did anyone experience the same kind of problem?
Any suggestion on how to work around?
Thanks in advance,