3.5.1 Matrix Server Installation Guide (June 2008)

Chapter 2: Install Matrix Server and MxFS-Linux 23
4. Cluster Administrative Traffic Protocol. Select either multicast or
unicast mode. Multicast mode is recommended.
When you have completed the fields on the General Settings tab, go to the
SAN & Fencing tab.
SAN & Fencing Tab
When certain problems occur on a server (for example, hardware
problems or the loss of matrix network communications), and the server
ceases to effectively coordinate and communicate with other servers in
the matrix, Matrix Server must remove the server’s access to filesystems
to preserve data integrity. This step is called fencing.
The SAN & Fencing tab allows you to select the method that Matrix
Server should use to remove access to the SAN. There are two fencing
methods:
• FibreChannel switch-based fencing. When a server needs to be
fenced, Matrix Server will disable the server’s access in the
FibreChannel fabric. The server must be rebooted to regain access to
the SAN.
• Web management-based fencing. Matrix Server uses remote
management hardware on the server to remove its access to PSFS
filesystems. (See the PolyServe Hardware and Software Compatibility
Guide for a list of supported servers and firmware.)