What is image clean up job in Netbackup?

It merely cleans up expired backup images.

Each backup job has an entry in the images database on the master. Expiration date and time is determined by the retention period in the schedule.

These images are not automatically cleaned out at the very second that they expire. The master server runs regular 'cleanup' jobs to remove expired images from the image catalog. The default is every 12 hours.

This process will also deassign tapes once all images on them have expired.

Your question has been answered ten times over!

If you need to understand the different components of NetBackup Catalogs and databases, PLEASE read up about Catalogs in NBU Admin Guide 1.

Look for this topic:

Parts of the NetBackup catalog

Yes, it cleans from EMM ...

Please explain why you are so concerned about this - NetBackup should be left alone for cleanup - if it goes wrong, we will fix it, it is it working, forget about it.

If you run cleanup commands without understanding exactly what you are doing, you risk data loss.

Apologies for being direct, and I am sure Marianne (one of the most experienced people on this forum) will agree with me - but you need a lot of experience with NBU before playing about with cleaning up the catalog.

If NBU is running correctly, is installed correctly and the backup environment has been designed correctly,it should work fine with no 'cleanup' commands needing to be run manually.

Martin

what if we dont run these?

Hi Puneet,

Why is this concerning you, providing the cleanup jobs are running correctly, forget about them,  they HAVE to run as they are part of how NetBackup works.

But, to answer your question.

1. When images expire from the catalog they will not be deleted.

2, Tapes will not become expred and abvailable for re-use.

3. In th case of disk storage being used, the fragments will not be deleted from the disks.

The effect, the catalog will not clear down, you will run out of disk (if used) and run out of tapes.

Martin

WE HAVE slp,so whats image cleanup in that?

nbstserv process is involved to move images to various states with the EMM database (eg.completed, eligible for deletion etc ..) but, the image cleaup is the same.

You did not answer my question, as to why this is an issue for you ?

Martin

ok thanks.

This is also true that when high water mark is reached,NBU runs image cleanup to delete expired images till low water mark defined?

Yes - that is correct - HWM will trigger the cleanup of duplicated images (one copy) and will attempt to clear down to the LWM.

If you question has been answered, please mark the post that helped you the most as the solution.

Martin