The following are some of the key differences between SnapVault and the qtree-based
SnapMirror feature.
SnapMirror uses the same software and licensing on the source appliance and the destination
server.
SnapMirror feature.
SnapMirror uses the same software and licensing on the source appliance and the destination
server.
SnapVault software has SnapVault primary systems and SnapVault secondary systems, which
provide different functionality. The SnapVault primaries are the sources for data that is to be backed up.
The SnapVault secondary is the destination for these backups.
Note: As of Data ONTAP 7.2.1, SnapVault primary and SnapVault secondary can be installed on
different heads of the same cluster. Data ONTAP 7.3 supports installing both the primary and
secondary on a standalone system.
SnapVault destinations are typically read-only. Unlike SnapMirror destinations, they cannot be made
into read-write copies of the data. This means that backup copies of data stored on the SnapVault
server can be trusted to be true, unmodified versions of the original data.
Note: A SnapVault destination can be made into read-write with the SnapMirror and SnapVault bundle.
SnapMirror transfers can be scheduled every few minutes; SnapVault transfers can be scheduled at
most once per hour.
provide different functionality. The SnapVault primaries are the sources for data that is to be backed up.
The SnapVault secondary is the destination for these backups.
Note: As of Data ONTAP 7.2.1, SnapVault primary and SnapVault secondary can be installed on
different heads of the same cluster. Data ONTAP 7.3 supports installing both the primary and
secondary on a standalone system.
SnapVault destinations are typically read-only. Unlike SnapMirror destinations, they cannot be made
into read-write copies of the data. This means that backup copies of data stored on the SnapVault
server can be trusted to be true, unmodified versions of the original data.
Note: A SnapVault destination can be made into read-write with the SnapMirror and SnapVault bundle.
SnapMirror transfers can be scheduled every few minutes; SnapVault transfers can be scheduled at
most once per hour.
Multiple qtrees within the same source volume consume one Snapshot copy each (on the sourcesystem) when qtree-based SnapMirror software is used, but consume only one Snapshot copy totalwhen SnapVault software is used.
The SnapMirror software deletes SnapMirror Snapshot copies when they are no longer needed for
replication purposes. The copies are retained or deleted on a specified schedule.
SnapMirror relationships can be reversed, allowing the source to be resynchronized with changes made
at the destination. SnapVault provides the ability to transfer data from the secondary to the primary only
for restore purposes. The direction of replication cannot be reversed.
SnapMirror can be used to replicate data only between NetApp storage systems running Data ONTAP.
SnapVault can be used to back up both NetApp and open systems primary storage, although the
secondary storage system must be a FAS system or a NearStore system.
replication purposes. The copies are retained or deleted on a specified schedule.
SnapMirror relationships can be reversed, allowing the source to be resynchronized with changes made
at the destination. SnapVault provides the ability to transfer data from the secondary to the primary only
for restore purposes. The direction of replication cannot be reversed.
SnapMirror can be used to replicate data only between NetApp storage systems running Data ONTAP.
SnapVault can be used to back up both NetApp and open systems primary storage, although the
secondary storage system must be a FAS system or a NearStore system.
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