Computer Associates BABNWUP900NE6 Administration Guide - Page 165
Submitting GFS Rotation Jobs with Append Media Enabled
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UPC - 757943261509
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Media Pools Without the Media Maximization option, each job would require its own tape: ■ Monday = Three full backup tapes. One tape for job1(day 1), one tape for job 2(day 1), and one tape for job 3(day 1) ■ Tuesday = Three incremental backup tapes. One tape for job1(day 2), one tape for job 2(day 2), and one tape for job 3(day 2). ■ Wednesday = Three incremental backup tapes. One tape for job1(day 3), one tape for job 2(day 3), and one tape for job 3(day 3). ■ Thursday = Three incremental backup tapes. One tape for job1(day 4), one tape for job 2(day 4), and one tape for job 3(day 4). ■ Friday = Three Weekly backup tapes. One tape for job1(day 5), one tape for job 2(day 5), and one tape for job 3(day 5). Without the Media Maximization option, you need 15 tapes for the week. Note: When submitting multiple GFS Rotation Jobs with the same media pool without Append Media enabled, tapes can be shared only if the same Backup Method is used. For example, a tape that has data from a full backup job can be shared only with data from another full backup job. It cannot be shared with data from incremental, differential, weekly, or monthly backup jobs. Submitting GFS Rotation Jobs with Append Media Enabled Similar to submitting GFS Rotation jobs without the Append Media feature enabled, you can maximize media usage when you enable Append Media by submitting multiple jobs using the same media pool. In addition, enabling Append Media also lets you maximize media usage by allowing you to share tapes among different jobs, regardless of the backup method that was used. (The only exceptions to this is weekly and monthly backup jobs. Weekly and monthly backup jobs can never share tapes with full, incremental, and differential backup jobs.) For example, when submitting multiple GFS rotation jobs with the same media pool without Append Media enabled, a tape that has data from a full backup job can be shared only with data from another full backup job. If you enable Append Media, a tape that has full backup data can be shared with full, incremental, and differential data. Managing Devices and Media 7-17
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