Hi there, The following pertains to a TSM 5.2 Windows 2003 server installation with IBM FAStT connected disk: I am currently attempting to perform a move data (disk to disk) across a SAN for ~ 600GB disk storage pool, consisting of 4 volumes of about 147GB each. The diskpool is at 100% and so I am attempting to increase each of the individual volumes by a specific amount by moving each of the volumes to a temporary (larger volume), deleting and recreating the original and then moving the data back. I am getting pretty awful throughput (no more than 2MB/s). Have attempted file copies across the SAN and getting really good (expected) throughput. There is no indication of any resource issues in perfmon. Some TSM info. that may be of interest:
movebatchsize 1000 movesizethresh 2048 Database cache hit pct: 99.79 Database cache wait pct: 0.00 Am also updating the volumes that I am not moving data into to read-only to avoid TSM attempting to write to them. There is no chance of me obtaining additional storage to perform a migration (tape or disk) so that is out of the question. I am beginning to think that it is so slow simply due to the sheer number of records in the database for this storage pool. Any suggestions? Many thanks, Tom.
