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July 12th, 2017 15:00
How to get a list of backup images with size and date
Hi Everyone,
We are reaching out the space on DD nearly 90%, our current clan-up process scheduled on every Tues and Thursday with 50% threshold limit.
I thought of clean the backup files/images which are not considered/purged, want to find out the list of all backup files/images which are exist on the data domain with size and date, based on that I will conclude which one should delete to reclaim the space.
can someone guide me, how can I get the backup files list with size and date from DD domain via GUI/CLI?
How can I delete only specific backup files instead of complete cleanup?
Appreciate your help.
Thanks,
Ram K
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umichklewis
3 Apprentice
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1.2K Posts
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July 13th, 2017 12:00
Much of this will depend how your images are written to the DD. How are they written today? Via Avamar? Networker? Another product? CIFS? NFS?
Deb_PS
156 Posts
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July 13th, 2017 12:00
You need to list your backup from NetWorker or Backup Application not from DD, Once the backups are listed, please delete it from Backup application. and once done please run a cleaning job to cleanup data from DD.
It's not recommended to directly delete from DD
Ryan_Johnson
73 Posts
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July 13th, 2017 13:00
One other thing to consider is the global duplication of the file system the Data Domain provides and the difference between uncompressed and physical capacity. In general the first time a client is backed up there will be a lot of unique data saved to the data domain. After that its only changed data. Removing one particular point in time of a backup is typically not going to save as much space as you might think. In general when I run into this type of scenario I go back to the point of time it was sold and see what was used for sizing. If more data is being backed up or longer retention than it was sized for then you need more physical capacity. Maybe you have a high change rate client due to encryption or rich media which wasn't factored in.
Example:
Data Domain has:
100TiB uncompressed total
10TiB compressed total
90% Compression
Backing up 1TiB daily average uncompressed
1st backup you get ~50% compression
Now you get ~95% compression per backup or ~51GiB new data daily average - retention =100 days
If you reduce retention to 50 days which is 50 savepoints or 50TiB uncompressed your going to get about 2.5 TiB of physical capacity freed up not half like a lot of people would think.