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Efficient file recovery with Snapshot copies

Snapshot copies consume minimal storage space because only changes to the active file systems are written. You can back up your volumes more frequently.

A Snapshot copy is a read-only image of a traditional volume, a FlexVol volume, or an aggregate that captures the state of the file system at a point in time. Two Snapshot copies created in sequence differ only by the blocks added or changed in the time interval between the two. This block incremental behavior limits the consumption of associated storage capacity.

When a Snapshot copy is created, the data is not copied from one location to another. As a result, you can store up to 255 Snapshot copies at one time on each volume without any performance overhead.

Data ONTAP provides a default Snapshot copy schedule for each volume. You can configure the schedule to fit your needs. This schedule creates Snapshot copies automatically and deletes old Snapshot copies after a predetermined amount of time.

For more information about Snapshot copies, see the Data ONTAP Data Protection Online Backup and Recovery Guide.

Related information
Data ONTAP documentation on NOW — http://now.netapp.com/NOW/knowledge/docs/ontap/ontap_index.shtml