The Snapmirror Technology of NetApp FAS Data OnTAP.
Pre-requirement: A workstation (OS: WinXP), two DataOnTAP732 simulators which are named node1 and node2 with Snapmirror licenses.
node1> vol create vol2 500m
node2> vol create vol2 500m
node2> qtree security /vol/vol2 ntfs
node1> vol options vol2 convert_ucode on
node1> vol status -b vol2
Volume Block Size (bytes) Vol Size (blocks) FS Size (blocks)
—— —————— —————— —————-
vol2 4096 128000 128000
node2> vol status -b vol2
Volume Block Size (bytes) Vol Size (blocks) FS Size (blocks)
—— —————— —————— —————-
vol2 4096 128000 128000
node2> snapmirror initialize -S node1:vol1 node2:vol1
Thu May 20 13:45:02 CST [replication.dst.err:error]: SnapMirror: destination transfer from node1:vol1 to vol1 : destination must be restricted for an initial transfer.
Transfer aborted: destination must be restricted for an initial transfer.
node2> vol restrict vol2
Share vol2 disabled while volume vol2 is offline.
Volume ‘vol2’ is now restricted.
node2> vol status vol2
Volume State Status Options
vol2 restricted raid_dp, flex
Containing aggregate: ‘aggr1’
node1> options snapmirror.access host=node2
node1> options snapmirror.access
snapmirror.access host=node2
node2> options snapmirror.access host=node1
node2> options snapmirror.access
snapmirror.access host=node1
node1> snapmirror on
node2> snapmirror on
node1> cifs share -add vol2 /vol/vol2
node2> cifs share -add vol2 /vol/vol2
<Use the Windows XP workstation to mount node1vol2, and write some files into the shared folder.>
node2> snapmirror initialize -S node1:vol2 node2:vol2
node2> snapmirror status
Snapmirror is on.
Source Destination State Lag Status
node1:vol2 node2:vol2 Snapmirrored 00:00:41 Idle
<Use the Windows XP workstation to mount node2vol2 to see if the data in the folder been mirrorred.>
The above steps are going through setting a asynchronous snapmirror .
The following steps are going to shut the NIC of the node1 down, and failover to the node2 with the shared folder.