-----Ursprüngliche Nachricht----- Von: Schwarz Werner BI Gesendet am: Freitag, 13. Dezember 2002 14:58 An: '[EMAIL PROTECTED]' Cc: Schwarz Werner BI Betreff: AW: BackupSet: Is there an efficient method to generate backupsets
Hi Zlatko thanks very much for the hints about backupsets. The effective problem we are looking to solve is the following: During a restore of a whole TSM-client we found that the needed ACTIVE backup_versions were heavy scattered around our virtual tapevolumes (primary tape stgpool). This was the main reason for an unacceptable long restore-time. Now we are looking for methods to 'cluster together' all active backup_versions per node without backing up the whole TSM-client every night (like VERITAS NetbackUp). These 'clustered' active backup_versions should be the candidates during a normal restore. We already have activated COLLOCATE. Do you have more nice ideas? thanks, werner -----Ursprüngliche Nachricht----- Von: Zlatko Krastev/ACIT [mailto:[EMAIL PROTECTED]] Gesendet am: Freitag, 13. Dezember 2002 13:17 An: [EMAIL PROTECTED] Betreff: Re: BackupSet: Is there an efficient method to generate backupsets Werner, on day_02 you will have 990 files still active from day_00 (bds010.1, bds011.1, ..., bds999.1) + 10 files from day_01 (bds000.2, bds001.2, ..., bds009.2) and your assumption is completely correct. What you want (as far as I understood it) is to mimic copypool behavior with backupsets and is not possible. If you are making this for only one node go the backupset way (1 tape/day) and it might be fine for you. If this is to be done for several nodes copypool is the right answer (few tapes/day + 1 DB tape/day). Copypool also allows you to recover from bad primary tape which you cannot accomplish with backupsets. Zlatko Krastev IT Consultant Schwarz Werner <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> 12.12.2002 18:15 Please respond to "ADSM: Dist Stor Manager" To: [EMAIL PROTECTED] cc: Subject: BackupSet: Is there an efficient method to generate backupsets I need help, please: Can me tell somebody to solve the problem described in the following example? ---- begin example assumption: I have 2 backup_versions time: day_00 The 1st time I create a backupset, all 1000 active backup_versions are consolidated on tape_01 {bds000.1,bds001.1, ... ,bds999.1}. time: day_01 Incremental backup creates 10 newer backupversions {bds000.2,bds001.2, ... ,bds009.2}. time. day_02 I create a 2nd backupset, all 1000 active backup_versions are consolidated on tape_02 {bds000.2,bds001.2, ... ,bds009.2,bds010.1,bds011.1, ... bds999.1}. Question_1: I suppose, that all 1000 versions on tape_02 are copied from the inventory of incremental backup_versions. Is this true? Question_2: Is it possible to do the following: copy {bds010.1,bds011.1, ... bds999.1} from tape_01 copy {bds000.2,bds001.2, ... bds009.2} from incremental backup_versions this would be more efficient in my environment. ---- end example Thanks everybody who can give me some useful comments kind regards, werner
