Types of data protection relationships

Depending on your data protection and backup requirements, OnCommand System Manager provides different types of protection relationships that enable you to protect data against accidental, malicious, or disaster-induced loss of data.

Mirror relationship (SnapMirror license required)

A mirror relationship provides 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.

For mirror relationships, the version of Data ONTAP that is running on the destination cluster must be the same or a later version than the one running on the source cluster. However, version-flexible mirror relationships are not dependent on the Data ONTAP version; therefore, you can create a version-flexible mirror relationship with a destination cluster that is either running a later version of Data ONTAP than the source cluster or an earlier version of Data ONTAP than the source cluster.
Note: The version-flexible mirror relationship feature is available only from Data ONTAP 8.3; therefore, you cannot have a version-flexible mirror relationship with a volume earlier than Data ONTAP 8.3.

Mirror relationships are valid for FlexVol volumes and Infinite Volumes.

Vault relationship (SnapVault license required)

A vault relationship provides storage-efficient and long-term retention of backups. Vault relationships enable you to back up selected Snapshot copies of volumes to a destination volume and retain the backups.

Vault relationships are valid only for FlexVol volumes.

Mirror and vault relationship (SnapMirror and SnapVault licenses required)

A mirror and vault relationship provides data protection by periodically transferring data from the source volume to the destination volume and also facilitates long-term retention of data by creating backups of the source volume.
Note: The mirror and vault relationship feature is available only from Data ONTAP 8.3.2; therefore, you cannot have a mirror and vault relationship with a volume earlier than Data ONTAP 8.3.2.

A mirror and vault relationship is valid only for FlexVol volumes.