HP StorageWorks X5500 Network Storage Gateway for Linux setup guide (AP811-96003, October 2009)

License. The license file is installed at /etc/opt/hpcfs/licenses/license. No action is required
here.
Secret Network Key. This password is required. It provides additional security for network
communications among the cluster servers. To set this key, click Set Secret Network Key. You can
enter anything you want for this password.
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 cluster
network communications), and the server ceases to effectively coordinate and communicate with other
servers in the cluster, HP X5500 Storage Gateway for Linux 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 HP X5500 Storage Gateway for Linux
should use to remove access to the SAN. There are two fencing methods:
• Fibre Channel switch-based fencing. When a server needs to be fenced, HP X5500 Storage
Gateway for Linux will disable the server’s access in the Fibre Channel fabric. The server must be
rebooted to regain access to the SAN.
• Web management-based fencing. HP X5500 Storage Gateway for Linux uses remote management
hardware on the server to remove its access to PSFS filesystems.
Notes regarding fencing
Before configuring fencing, you should be aware of the following:
• If you will be using IPMI interfaces with web management-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.
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