Video Screencast Help

Consolidate Backup Sets

Created: 12 May 2014 • Updated: 13 May 2014 | 11 comments
This issue has been solved. See solution.

I have a 4 tape drive library.  At the moment, the jobs use all the drives, which is good, until I see bunches LTO5 tapes with 20GB or less on them.  Not to fussed with the daily or weekly tapes but this is wasteful for monthly tapes.

Is there a way to consolidate all the small backup sets across the monthly media to a single tape of my choosing after the fact?  I can't see  where the duplicate backup set option will allow this.

Operating Systems:

Comments 11 CommentsJump to latest comment

pkh's picture

In your duplicate job, choose to append to the tape.  You must ensure that the AP is long enough so that the tape is appendable.  The AP is set in the media set containing the tape.

BackupExecNewb's picture

How do I specify that it goes to a specific tape?  The only options I see is the storage, retention, schedule, compression and ecryption.

pkh's picture

Unless you are using a stand-alone tape drive, it is very difficult to specify a specifc tape.  Normally, you would specify the AP such that there is only one appendable tape in the media set and naturally all the jobs will append to this tape.

BackupExecNewb's picture

That's disappointing. I know it can be done in NetBackup.  Was hoping there was soem funcitonality withing BE to do this.

Colin Weaver's picture

In BE you also have to make sure the jobs do not try to run in parallel (especially if you have two tape drives in your library) as if they run in parallel the second job might choose a different tape because the state of the first tape is unknown whilst a job is using it.

 

NetBackup has a multi-plexing option that writes simultaneous data streams into one tape (and might be what you are referring to). Backup Exec does not have this and probably never will as it is a complicated function of the more expensive backup products that are specifically designed for very large enterprises. What Backup Exec has is the Append function which means once one backup has finished writing to a tape, a following backup can then add data to the empty space on the end of the same tape.

BackupExecNewb's picture

Yeah ok.  I wasn't referrign to multiplexing.  I could duplicate a tape to another with NBU.  Was hoping I could do the same with BE.  I guess I only have 2 choices - don't take advantage of multiple drives, as it means I can get my backup jobs faster but it's goign to suck up a lot of media - or just keep the media in rotaton and they all will eventuallly fill up.

pkh's picture

BE can duplicate from one tape drive to another tape drive, provided you have 2 out more tape drives

BackupExecNewb's picture

Yep this is true.  But  I was trying to figure out how to duplicate to a specific tape so that I can consolidate all the 3-20Gb backup sets across all my LTO5 monthly tapes onto a single monthly tape

pkh's picture

You can create a temporary media set, set the AP to a long time, put a single tape into this temporary media set and then have your jobs target this media set. This way they will all append too this one tape

SOLUTION
Colin Weaver's picture

You have to dupliocate each set on the tape and not the whole tape in BE and if any of the sets span between two tapes you will need all the tapes.