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Methods of protecting data

Depending on your data protection and backup needs, Data ONTAP offers a variety of features and methods that enable you to protect data against accidental, malicious, or disaster-induced loss of data.

Snapshot copies
Enable you to manually or automatically create, schedule, and maintain multiple backups (also called Snapshot copies) of data on a volume. Snapshot copies use only a minimal amount of additional volume space, and do not have a performance cost.

If a user accidentally modifies or deletes crucial data on a volume with Snapshot technology enabled, that data can be easily and quickly restored from one of the latest Snapshot copies created. You can also create clones of FlexVol volumes using Snapshot copies.

This method is valid for FlexVol volumes and Infinite Volumes.

SnapRestore (license required)
Enables you to perform fast, space-efficient, on-request Snapshot recovery from Snapshot copies on an entire volume.

This method is valid for FlexVol volumes and Infinite Volumes.

Data protection mirror copies (SnapMirror license required)
Provide asynchronous disaster recovery. Data protection mirror relationships enable you to periodically create Snapshot copies of data on one volume; copy those Snapshot copies to a partner volume (the destination volume), usually on another cluster; and retain those Snapshot copies. The mirror copy on the destination volume ensures quick availability and restoration of data from the time of the latest Snapshot copy, if the data on the source volume is corrupted or lost.

If you conduct tape backup and archival operations, you can perform them on the data that is already backed up on the destination volume.

This method is valid for FlexVol volumes, Infinite Volumes, and SVMs with FlexVol volumes. For SVMs with FlexVol volumes, all of the SVM data and configuration is replicated.

SnapVault backups (SnapVault license required)
Provide storage-efficient and long-term retention of backups. SnapVault relationships enable you to back up selected Snapshot copies of volumes to a destination volume and retain the backups.

If you conduct tape backup and archival operations, you can perform them on the data that is already backed up on the SnapVault secondary volume.

This method is valid only for FlexVol volumes.

volume copy
Enables you to perform fast block-copy of data from one volume to another.

This method is valid only for FlexVol volumes.

nvfail option to the volume modify command
Provides protection against data corruption by failures of nonvolatile RAM (NVRAM).

This method is valid for FlexVol volumes and Infinite Volumes.

MetroCluster
Stretch MetroCluster configurations provide site protection within a campus and support replication up to 500m.
Fabric MetroCluster configurations provide site protection within a metro, and support replication up to 100 km using FC switches. SyncMirror functionality is enhanced to provide continuous volume mirroring.

This method is valid only for FlexVol volumes.