Array Groups
Array groups are collections of up to four arrays that are managed as a single
entity. Grouped arrays allow you to aggregate for increased performance and capacity.
For iSCSI arrays, grouping makes multi-array storage pools possible.
NOTE: If you have configured synchronous replication
and want to enable the Automatic Switchover feature, the array group can only
consist of two arrays. For more information, see Synchronous Replication.