Requirements When Configuring Sun NAS Devices as Quorum Devices

The administrator has the option of deciding whether to use the Sun NAS device as a quorum device.

When you use a Sun NAS device as a quorum device, you must meet the following requirements.

• When booting the cluster, you must always boot the Sun NAS device before you boot the cluster nodes.

  If you boot devices in the wrong order, your nodes cannot find the quorum device. If a node should fail in this situation, your cluster might be unable to remain in service. If the cluster fails because the Sun NAS quorum device was not available, bring up the Sun NAS device. After that action completes, boot the cluster.

• Sun Cluster supports Sun NAS quorum devices starting with the Solaris 10 OS.

• The Sun NAS device must be located on the same network as the cluster nodes. If a Sun NAS quorum device is not located on the same network as the cluster nodes, the quorum device is at risk of not responding at boot time within the timeout period, causing the cluster boot up to fail due to lack of quorum.

• Sun Cluster supports the use of the iSCSI data path for certain storage devices. For more information about which devices can be used with the iSCSI data path, contact your Sun service representative.