HP StorageWorks Clustered File System 3.6.0 Windows Storage Server Edition Setup Guide (403102-005, January 2008)

Chapter 3: Setting Up HP StorageWorks Clustered File System 19
Configuring the FibreChannel switches is not required for sites using
server-based fencing. However, if the switches are configured as
described here, certain HP Clustered File System commands can return
more information.
To configure FibreChannel switches, complete the following tasks:
• Enable server access to the SAN. Each server that will be in the cluster
must be able to access the disks in the SAN. You may need to enable
server ports on the FC switches or to change the zoning configuration
to give servers the necessary access to the SAN.
• Modify the SNMP setup. Make the following changes:
– Enable access to the SNMP agent from each server that will be in
the cluster.
– Set the SNMP community string to the desired value. The
community string must be the same for all FibreChannel switches.
If you are using fabric fencing, ensure that the community string
has write privileges. For server-based fencing, you can optionally
configure a read-only community string.
– On Brocade switches only, run the snmpMibCapSet command on
the switch. Change the famib setting to yes and accept the default
values for the other settings.
• For McDATA switches, domain-wide RSCNs should be disabled.
• If the servers are connected to switches in multiple fabrics, the
physical ports on each switch must be assigned to unique domain IDs.
A different domain ID must be used on each fabric (any given domain
ID can exist on only one fabric in the SAN). For example, if a server is
connected to two switches that are not in the same fabric, switch1
could use domain ID 6 and switch2 could use domain ID 7. Domain
ID 6 must not exist on the fabric containing switch2 and domain ID 7
must not exist on the fabric containing switch1.
Typically these tasks can be performed from the FC switch or from third-
party applications. Refer to your FC switch or application documentation
for more information.