Adhering to Quorum Device Requirements
Ensure that Sun Cluster software supports your specific device as a quorum device. If you ignore this requirement, you might compromise your cluster's availability.
Note –
For a list of the specific devices that Sun Cluster software supports as quorum devices, contact your Sun service provider.
Sun Cluster software supports the following types of quorum devices:
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Multihosted shared disks that support SCSI-3 PGR reservations
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Dual-hosted shared disks that support SCSI-2 reservations
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A Network-Attached Storage (NAS) device from Sun Microsystems, Incorporated or from Network Appliance, Incorporated
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A quorum server process that runs on the quorum server machine
Note –
A replicated device is not supported as a quorum device.
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.
For examples of quorum configurations to avoid, see Bad Quorum Configurations. For examples of recommended quorum configurations, see Recommended Quorum Configurations.
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