We have two TSM 6.2.2.0 TSM servers in different locations running under zSeries Linux. Both use sequential disk storage pools on IBM XIV disk to store the primary copies of backup files. The databases and recovery logs are also on XIV disk.
We are still in the process of migrating workload to the two sites. We expect to end up a couple of hundred TSM client nodes at each site, with something in the neighborhood of a terabyte per night of incoming backup data at each site. We will shortly be taking delivery of a Hitachi HUS150 disk array for each location. The initial motivation for these was to provide significantly cheaper storage for large image repositories. We are considering using the new arrays for long term storage of TSM backups as well. Two different approaches to this are under consideration. One approach is to have incoming backups written to HUS150 disk and then left there. The other approach is to have incoming backups written to XIV disk and subsequently migrated to HUS150 disk for long term storage. Has anyone tried the first approach with an HUS150 or a competing product with similar performance characteristics? Thomas Denier, Thomas Jefferson University Hospital
