Joe, You can generate backupsets they really do not re-transmit any data from the node. Data ought to be on the server and is taken from the primary pool. If you generate backupsets on regular basis they can give you features similar to archives but not the same. Yes, backupset can produces new set of tapes for each node which is similar to collocation. However with collocation you can put data from several nodes on a single tape if your pool is constrained in scratch volumes. This is impossible with backupsets. And if you generate backupsets for each filespace one-by-one you waste even more tapes (similar to filespace collocation but again with the remark above). The main idea behind backupsets is to allow you to restore without server involvement. So only active files are included. Backupsets are NOT part of any storage pool, be it primary or copy pool. They are bound to device class and occupy library volumes. Within TSM database they are treated same as DB backups and DB snapshots. There is entry in volume history and DB for what this volume is used, when is was created and when it will expire, i.e. would be freed. You can define separate device class or use existing one for backupsets. I hope this answers to those your questions.
Zlatko Krastev IT Consultant Joe Cascanette <[EMAIL PROTECTED]> on 22.11.2001 16:05:49 Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: Subject: Archives vrs Backup Sets Has anyone been using backup sets?. I have been looking into using backup sets on a monthly bases instead of archives. I am using DLT 40/80 gig drives/tapes (10 of them). TSM 4.2.1.6 on Windows 2000, and 4.2.0 clients on about 98% of the machines. >From what I am reading I am able to perform this operation at the TSM server and it directs the output to scratch tapes. The GREAT thing about this is it does NOT touch the serves to retransmit all the data to the archive storage pool, and then to tape (which is alot of traffic!). The Backups sets would use more tapes (kind of like collocation turned on right?!). So after the daily incremental running at night, I will be able to create the backup sets ( for a monthly archive) using the current data just backed up from that node. (right?!) One question is when doing a backup set, does it also save all the inactive files? or just the active ones? Is there a way to direct all the backup sets to another copy pool to utilize tape consumption and to keep the tapes separate from the other copypools for easier search? (just a thought - but this would be a lot of extra work. Any thoughts would be greatly appreciated. Thank you Joe Cascanette The Cumis Group
