Hi Peter, Copy pools are used for Disaster Recovery. Disasters can be small, like primary pool tape corruption/defects or large like complete site loss.
The small thing is most likely to hit you now and again. If you can afford to lose back up or archive data because of tape damages than there is no need for having the burden of defining copy pools. Large things like site loss, I hope never to experience as an site administrator. For that reason you have to implement a DRM plan, where the copy pool tapes will be sent daily to a remote location. In copy pools the same data is available as in the primary pools. You can define one copy pool for multiple primary pools, one copy pool per primary pool and/or multiple copy pools per primary pool. The last option will give you the ability to have both an on-site copy pool for fast recovery of damaged tapes and an off-site copy pool for the larger disasters. Its also the most expensive one. In TSM you can have all storage pools take volumes from a SCRATCH pool as needed, or you can define a fix number of volumes defined in a specific storage pool. The first option I like to use. To have the primary storage pool copy its data to a copy storage pool you need to run the process "Backup Storage Pool <primary pool name> <copy storage pool name> maxproc=<some number>. Note: if this are all tape pools, for one process it will mount two tapes (so you need at least 2 drives available). In our environment we use multiple tape pools and multiple copy pools. Our daily ITSM housekeeping looks like this: 1) back up storage disk pool > copy pool; 2) back up storage tape pool > copy pool; 3) migrate disk pool tape pool; 4) back up storage tape pool > copy pool; 5) backup DB; 6) prepare (make DRM plan file to remote location) 7) take all copy pool volumes out off the library and sent them to a remote location. 8) start reclamation for primary pools; 9) start reclamation for copy pools (if primary pools has finished). 10) back-up nodes. Regard, Karel -----Oorspronkelijk bericht----- Van: Peter Daransky [mailto:[EMAIL PROTECTED] Verzonden: donderdag 4 maart 2004 1:47 Aan: [EMAIL PROTECTED] Onderwerp: COPYPOOL Basic Question Hi TSMers ... i've a one basic question, i know that it's in manual but i couldn't understand it. Why do i need exactly COPYPOOL ? With other word what will be backed up on copypool. Do i need have some media in Tape library with location = COPYPOOL or is it ok if i've only a LIBPOOL volumes there ? If i have some media in COPYPOOL and my LTOPOOL is full could i easy take this "free" media from COPYPOOL and checkin it in LTOPOOL and update the location from the media ? Tanks for your help ... Peter
