3.4.0 Matrix Server Installation Guide

Chapter 2: Install PolyServe Matrix Server 21

4. Cluster Administrative Traffic Protocol. Select either multicast or

unicast mode. Multicast mode is recommended; however, if your

network configuration does not allow multicast traffic through the

network, you will need to use unicast mode.

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 on the PolyServe Web site for a list of supported servers and

firmware.)

NOTE: After Matrix Server is configured, you can verify that it has the

correct information to fence each server. See “Test the Fencing

Configuration” on page 34.