There is a set of prerequisites that you need to fulfil, before you can use SnapMirror.
- You must purchase and enable the SnapMirror license. If the SnapMirror source and destination are on different systems, you must purchase a license and enter the SnapMirror license code on each storage system.
- For SnapMirror volume replication, you must create a restricted volume to be used as the destination volume. SnapMirror does not automatically create a volume. For information about how to create volumes, see the section on organizing data using volumes and qtrees in the Data ONTAP Storage Management Guide.
- For SnapMirror volume replication, the destination storage system must use a version of Data ONTAP that is the same as or later than that of the SnapMirror source storage system. If you configure volume SnapMirror to support replication for the purpose of disaster recovery, both the source and destination storage systems must use the same version of Data ONTAP.
Note: If you upgrade your
storage systems to a later version of
Data ONTAP, upgrade the
storage systems of
SnapMirror destination volumes before you upgrade the
storage systems of
SnapMirror source volumes.
- For SnapMirror qtree replication, you must not create a qtree to be used as a destination qtree; the snapmirror initialize command creates the destination qtree automatically.
- For SnapMirror qtree replication, the destination qtree must run under Data ONTAP 6.2 or later.
- The name and IP address of the source storage system must be in the /etc/hosts file of the destination storage system or must be resolvable by way of DNS or the yp command.
