Ed, You are right on both counts; backup objects have one set of retention parameters, from the MC in the backup copygroup; backupset is one way to achieve different retention (for all the active objects at the point-in-time it's created); another method is to use more than one nodename, and/or play with export/import -- not really the intended backup/restore scenario TSM was designed to handle.... the only way to achieve different retention (in TSM) for any given set of files is to use archive, and vary the management class (which maps to specific retention).
In v5, backupset performance has been improved -- especially, client-side restore. BTW, this idea runs counter to the TSM-copypool & backup philosophy... 1. if it's worth backing up, it's worth duplicating,,, or, 2. Never trust your backup data to a single piece of tape! 3. This scenario seems to ignore the possibility that a media failure (ie, either congenital defect or "the operator dropped the cartridge") HTH. Don France Technical Architect -- Tivoli Certified Consultant Tivoli Storage Manager, WinNT/2K, AIX/Unix, OS/390 San Jose, Ca (408) 257-3037 mailto:[EMAIL PROTECTED] (change aye to a for replies) Professional Association of Contract Employees (P.A.C.E. -- www.pacepros.com) -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] Behalf Of Edgardo Moso Sent: Wednesday, March 12, 2003 1:20 PM To: [EMAIL PROTECTED] Subject: Creating two tape copies offsite with each has Different Retention Hello Fellow TSMERs, This is quite a wild idea but I just would like to solicit your opinions if how could I satisfy the the requiremetn asked by manager. He wants in one backup instance to create two copies for the two copy storage pools one for onsite and one for OFFSITE. I know this can be done in TSM 5.1. Aside from this he added that each of this shoudl have different retentions. Say, onsite is 15 days retention and offsite is only 7 days. I tried reading the technical manual of TSM 5.1 but I think it's impossible to do this unless I will apply the concept of backup set. I don't think the new features of TSM 5.1 inlcudes this. What do you think, gurus? If I used the backupset, does anybody of you have experience on this? How does the backupset performance behaves in the new TSM 5.1? Any ideas are greatly appreciated. Thanks, Edgardo Moso
