I'm still in the process of learning the ins and outs of Veritas Backup Exec 10. I'm using it wtih a Dell PowerVault 132T robotic tape library.
I encountered a problem. I had 2 tapes, in 2 different media sets, call them A and B. The 2 media sets had no other tapes in them. The tape in set A ran out of space, and Veritas pulled the tape from set B into set A to complete a backup one night. I did not desire this behavior. I instead would have liked the tape in set A to just start being overwritten from the beginning once it filled up. Does anyone know how to achieve this? All of our tapes are allocated to a media set, so there aren't any spares. I just want 1 tape in set A to be appended to until full, then immediately be overwritten with new data. Here are some of my settings:
Media overwrite protection level: Full
Media overwrite protection: Append to media, overwrite if no appendable media is found
Overwrite protection period (for both media sets) 0 hours
Append period (for both media sets) Infinite
Thanks in advance for any help, advice, or constructive criticism. =)
I don't believe your scheme of a single tape will work because the last appended job on the tape, once full, will need to continue on a second tape. You'll need at least two tapes in the media set. If you have two tapes in media set A loaded in the changer and the overwrite period has expired, the system should take the tape from the same media set before using one from a different media set.
Also, you can create partitions in your library so the backup jobs will take tapes only from the targeted partition. I do this to separate my email backups from my regular backups. Put your different media sets in different partitions and the system will never reassign a tape to a different media set. If no capacity is available in the target partition the job will fail.
To understand better the process of media management, please refer to the following technotes:
1. The chapter on 'Managing media' on page 191 in the administrator's guide : Title : VERITAS Backup Exec (tm) 9.1 for Windows Servers Administrator's Guide (English) http://support.veritas.com/docs/266190
2. Title : The basics of Advanced Device and Media Management for VERITAS Backup Exec (tm) for Windows Servers http://support.veritas.com/docs/192265
3. Title : An explanation of the "Overwrite Protection Period" and the "Append Period" http://support.veritas.com/docs/237374
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