You must adhere to the following requirements. If you ignore these requirements, you might compromise your cluster's availability.
Ensure that Sun Cluster software supports your specific device as a quorum device.
For a list of the specific devices that Sun Cluster software supports as quorum devices, contact your Sun service provider.
Sun Cluster software supports two types of quorum devices:
Multihosted shared disks that support SCSI-3 PGR reservations
Dual-hosted shared disks that support SCSI-2 reservations
In a two–node configuration, you must configure at least one quorum device to ensure that a single node can continue if the other node fails. See Figure 3–2.