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Disk backups - automatic removal of expired files

Created: 21 Jul 2014 • Updated: 22 Jul 2014 | 8 comments
This issue has been solved. See solution.

I have a large disk storage that I do my backup to disk on then from there, backup to tape.  I have an expiration date of 5 days.  Question,  what program does this cleanup and why does it work sometime and not other times??  Also,  is there a place that you can set this program to run (specific date)?

Thanks much

Cathy

Operating Systems:

Comments 8 CommentsJump to latest comment

pkh's picture

Disk storage is managed by DLM and it grooms the disk storage every 4 hours. See this blog and my article

https://www-secure.symantec.com/connect/blogs/data...

https://www-secure.symantec.com/connect/articles/w...

SOLUTION
Cat Adams's picture

thanks pkh.  Where is the blog and article and can you change the date and time this occurs??

 

Cathy

SOLUTION
pkh's picture

No. DLM will groom very 4 hours. You have no control over this

SOLUTION
Cat Adams's picture

Wow..   I have things that have expired days ago.  Reason I am concerned is that I have full backups that go on the weekends and weekend before last,  several disk ran out of room but when I went to delete some of the files,  they had expires 2 weeks or more ago.  So the DLM is not working properly for me.

I just checked and for the incrementals to start out this week,  I had to delete some more.  Some expired June 16th.  That is why I am wanting to get a handle on this.

 

Thanks much

Cathy

pkh's picture

Make sure you are on SP4 and the latest hotfixes.

If your disks are removable USB disks, then plug them in and leave them for a couple of hours so that DLM can groom them.

SOLUTION
Colin Weaver's picture

Bear in mind that even though full backups might be listed as expired, they will not be removed from the system until all their dependent Incremental backups can also be removed from the system

As such if you are using 5 day retention on your fulls and incrementals (and assuming you run a full once week  and daily incremantals that run for 6 days before the next full) then the full will not be removed for 10 days (+ up to 4 hours more)

Also note that without changing the defaults we do not allow the last full sequence of a backup set to be removed autopmatically. As such if you run a one-off backup of a resource that backup will not be removed after the expiry time. The default setting that controls this is available in the BE console in 2014 but is a registry change in 2012. I would also suggest an upgrade anyway as 2014 does have some data lifecycle management (DLM) updates.

SOLUTION
Cat Adams's picture

Thanks to you both.  I understand now.  Going to update to 2014 this fall.  Too much going on now but that explaination was great.  Good information to know going forward.

Thanks for taking the time to respond to this.

 

Regards

Cathy Adams

Bayside City Council's picture

My experience is that assuming you are using the De-Dupe engine there are still many issues with the DLM even with BE2012 SP4.

I have Backup Sets sitting in my Central Admin Servers De-Dupe Store that have expired mid May and ave not yet been groomed out.  I have to manually remove these and we do Full backup every weekend.

Wish there was a way of charging back top Symantec the hours each day it take to manually manage their automatic environment

DLM still not working.PNG