3.6.0 Matrix Server Installation Guide (5697-7079, February 2008)

Chapter 3: Install PolyServe Matrix Server 24

FibreChannel fabric. The server must be rebooted to regain access to

the SAN. This method is also called fabric-based fencing.

• Web management-based fencing. Matrix Server uses remote

management hardware on the server to remove its access to PSFS

filesystems. This method is also called server-based fencing. (See the

PolyServe Hardware and Software Compatibility Guide on the PolyServe

Web site for a list of supported servers and firmware.)

Notes Regarding Fencing

Before configuring fencing, you should be aware of the following:

• If you will be using the FibreChannel Virtual Interconnect modules on

the HP C-Class Blade System, you must configure web mangement-

based fencing. Switch-based fencing cannot be used with these

modules.

• If you will be using IPMI interfaces with web mangement-based

fencing, you will need to change the password from the factory

default. The fencing feature will not work correctly if the password is

not changed.

• ISCSI storage must use web management-based fencing.

• An issue discovered in PolyServe Matrix Server 3.6.0 prevents the use

of custom community strings with fabric-based fencing. Clusters

configured with fabric-based fencing must have both a read/write

community string named “private” and a read-only community string

named “public”. If this is not possible, the fencing method must be

changed to web-based fencing using iLO, DRAC, IPMI, RSA, or

another compatible management interface. This regression will be

fixed in a future release.

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 37.