The BRMS Application Client overview states the solution is being limited to user data. Why can I backup my entire system to the TSM server?
The iSeries architecture and BRMS only allow you to save system data to local media so that you are protected should you need to recover the system. The means of recovery is to re-install all the system software and fixes, or re-boot the system using the media containing the latest system save. Re-booting the system using the latest save is the fastest way to recover the system. If the system saves are managed by BRMS, the recovery of the system is even easier because BRMS guides you step-by-step. Only after the operating system is restored can communication with an TSM server be established for restoration of the user data stored there. BRMS automatically restores the most current data stored at TSM servers.