Storage-at-clusters tells metro node at which cluster the physical storage associated with a consistency group is located.
The
storage-at-clusters property of a consistency group must be a non-empty subset of the consistency group’s
visibility property.
If visibility is set to one cluster, then
storage-at-clusters must be exactly the same as
visibility.
If visibility is set to two clusters (1 and 2), then storage-at-clusters can be one of:
cluster-1
cluster-2
cluster-1 and cluster-2
A volume that does not have local storage at every cluster specified by the
storage-at-clusters property of a consistency group, cannot be added to the consistency group.
For example, if a volume has storage only at cluster-1, it cannot be added to a consistency group that has its
storage-at-cluster property set to cluster-1 and cluster-2.
A volume that has local storage at more clusters than those specified by the
storage-at-clusters property of a consistency group, cannot be added to the consistency group.
For example, if a volume has storage at cluster-1 and cluster-2, it cannot be added to a consistency group that has its
storage-at-cluster property set to cluster-1.
The
storage-at-clusters property cannot be modified if doing so conflicts with the topology of any of the volumes currently in the consistency group.
Use the
set command in
/clusters/cluster/consistency-groups/consistency-group context to modify the
storage-at-clusters property. For example, to set the
storage-at-clusters property to both clusters:
VPlexcli:/clusters/cluster-1/consistency-groups/TestCG> set storage-at-clusters cluster-1,cluster-2
NOTE:Best practice is to set the
storage-at-clusters property when the consistency group is empty.
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