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Forum Discussion
RN314 - want to limit number of daily snapshots kept
Hello from sunny Los Angeles, CA! Ken here, working IT for a Wholesale business where I administer a ReadyNAS 314 with two mirrored 4TB drives. First day in the forum here, was about to start searc...
Note also that the NAS will automatically prune snapshots - http://kb.netgear.com/app/answers/detai ... management
Monthly snapshots are kept forever (which in my personal view is a mistake). But there aren't that many to manually delete.
There are two downsides with using snapshots on shares with a lot of data churn. You mentioned one - if there is a lot of data churn in the share, then the space used goes up The second is that the changing files can be become fragmented. For instance, if you have an SQL database in the share that is always being updated, taking snapshots will fragment the database file. So If you have a lot of data churn on a share, you might want to turn snapshots off altogether.
At the other extreme - if there is no churn at all in the main share, then snapshots are free. they take essentially no disk space. Similarly, if files are only added (but not renamed or deleted), snapshots are also free.
I am thinking that if snapshots need to be deleted after two weeks, then either the isn't enough disk capacity (and you should add a third drive) or snapshots likely need to be turned off for some shares.
Monthly snapshots are kept forever (which in my personal view is a mistake). But there aren't that many to manually delete.
There are two downsides with using snapshots on shares with a lot of data churn. You mentioned one - if there is a lot of data churn in the share, then the space used goes up The second is that the changing files can be become fragmented. For instance, if you have an SQL database in the share that is always being updated, taking snapshots will fragment the database file. So If you have a lot of data churn on a share, you might want to turn snapshots off altogether.
At the other extreme - if there is no churn at all in the main share, then snapshots are free. they take essentially no disk space. Similarly, if files are only added (but not renamed or deleted), snapshots are also free.
I am thinking that if snapshots need to be deleted after two weeks, then either the isn't enough disk capacity (and you should add a third drive) or snapshots likely need to be turned off for some shares.
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