HP StorageWorks Clustered File System 3.6.0 Windows Storage Server Edition Administration Guide (403103-005, January 2008)

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SAN Maintenance
The following information and procedures apply to SANs used with HP
StorageWorks Clustered File System.
Server Access to the SAN
When a server is either added to the cluster or rebooted, HP Clustered
File System needs to take some administrative actions to make the server
a full member of the cluster with access to the shared filesystems on the
SAN. During this time, the HP CFS Management Console reports the
message “Joining cluster” for the server. The message is removed when
the administrative actions are complete and the server is participating in
the cluster.
A server can lose access to all or part of the SAN for several reasons:
•Network problems. Cluster partitioning can occur when cluster
network communications are lost but the affected server can still
access the SAN. HP Clustered File System then removes the server’s
access to the SAN to protect the integrity of the shared filesystems.
You will need to reboot the server to restore its SAN access.
• SAN hardware problems or misconfiguration of a FibreChannel
switch. The server’s access to the SAN will be restored automatically
when the hardware is repaired or reconfigured correctly.