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Mgmt server
software
The version of management server software running.
Cluster Witness
Server Software
The version of Cluster Witness server software running (if Cluster Witness is installed).
Directors Lists the name and version number of each director in the cluster.
Step 1: Select or create a consistency group for the
virtual volume
Select or create a consistency group for the virtual volume.
To view the topology of a consistency group, select the group in the list. In the map that displays to the right, the Storage icon
and blue shading around a cluster indicate that the selected consistency group uses storage from that cluster.
● To add the virtual volume to an existing consistency group, select Add storage to existing consistency group and then
select the consistency group in the list.
● To filter the list of consistency groups by name, type the full or partial name of the consistency group in the Filter text
box. To filter by storage location, click the drop-down box to the right of the Filter text box, and then select the storage
location.
● To create a new consistency group for the virtual volume, select Create new consistency group.
Step 1: Create a consistency group
Complete the following fields to create a consistency group for the virtual volume.
Consistency Group Name — Type a name for the consistency group.
Consistency Group Type — Select the type of consistency group to create: Local or Distributed.
● For local consistency groups, select the cluster on which to create the consistency group.
● For Distributed consistency groups, select a detach rule. The detach rule determines if IO continues and at which cluster if
an inter-cluster link failure occurs.
NOTE: Detach rules are applied per consistency group.
Detach rule Cluster-1 Cluster-2
No automatic winner Suspends I/O
NOTE: This detach rule is generally
used if you have created external
scripts or use other programs to
determine which cluster detaches and
continues I/O during a link failure.
Suspends I/O
NOTE: This detach rule is generally
used if you have created external
scripts or use other programs to
determine which cluster detaches
and continues I/O during a link
failure.
Winner: <cluster-1> (5 seconds) Services I/O within 5 seconds Suspends I/O
Winner: <cluster-2> (5 seconds) Suspends I/O Services I/O within 5 seconds
Step 2: Select volume options
Select mirroring on the cluster where the virtual volumes will be created (optional), the quantity, size and base name for the
virtual volumes, and then enter a name for the provisioning job (optional).
High Availability — Select this check box to enable mirroring at the cluster indicated. The option to mirror at a cluster is
disabled if you have less than two arrays in the cluster.
● For a local consistency group, select the check box to enable mirroring at the local cluster.
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