Shared Disk Sets

A shared disk set can be shared by multiple hosts. Although a shared disk set is visible from all the participating hosts, only the owner of the disk set can access it. Each host can control a shared disk set, but only one host can control it at a time. Additionally, shared disk sets provide a distinct namespace within which the volume is managed.

A shared disk set supports data redundancy and data availability. If one host fails, another host can take over the failed host's disk set. This type of configuration is known as a failover configuration.

Shared disk sets are intended, in part, for use with Sun Cluster or another supported High Availability (HA) framework. Solaris Volume Manager by itself does not provide all the functionality necessary to implement a failover configuration.