3.6.1 HP PolyServe Matrix Server Administration Guide (T5392-96018, August 2008)

262
20
SAN Maintenance
The following information and procedures apply to SANs used with
PolyServe Matrix Server.
Server Access to the SAN
When a server is either added to the matrix or rebooted, Matrix Server
needs to take some administrative actions to make the server a full
member of the matrix with access to the shared filesystems on the SAN.
During this time, the PolyServe Management Console reports the
message “Joining matrix” for the server. The message is removed when
the administrative actions are complete and the server is participating in
the matrix.
A server can lose access to all or part of the SAN for several reasons:
• Network problems. Matrix partitioning can occur when matrix
network communications are lost but the affected server can still
access the SAN. Matrix Server 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.