The TSM DRM regimen must be rigorously followed for it to properly and fully work. Deviations make for problems. Refer to IBM Technote 1115957 and the Disaster Recovery Strategies with Tivoli Storage Manager redbook for the necessary steps and guidance. Consider also that your File approach to DB incrementals was set up as a tape utilization expedient; but be clear what role disk-locked database backups can play in the overall disaster recovery strategy, where the site is presumed lost, and thus disks with it.
Richard Sims
