Raritan Computer CCA-0N-V5.1-E - Manual (Page 276)

Chapter 15: Advanced Administration
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5. Type a valid user name and password for the Backup node in the
Username for Backup Secure Gateway and Password for Backup
Secure Gateway fields.
6. Select the Redirect by Hostname checkbox to specify that secondary
to primary redirection access should be via DNS. Optional. See
Access a CC-SG Cluster (on page 257). If you're using hostnames
instead of IP addresses, the DNS server should contain reverse
lookup records for the IP addresses of the CC-SGs to ensure the
hostnames can be resolved.
7. Click Create Cluster. A message appears.
8. Click Yes.
Important: Once you begin the cluster creation process, do not
perform any other functions in CC-SG until the process has
completed.
9. Continue clicking OK for any onscreen messages. The Backup node
will restart and the process takes several minutes.
10. When the cluster creation is complete, a message appears,
indicating the Backup node is successfully joined.
Configure Cluster Settings
You cannot change the time zone in a cluster configuration.
To configure cluster settings:
1. Choose Administration > Cluster Configuration.
2. In the Configuration tab, modify or configure the settings.
 If necessary, modify the cluster name.
 For Time Interval, enter how often CC-SG should check its
connection with the other nodes. Valid range is 5-20 seconds.
Note: Setting a low Time Interval will increase the network traffic
generated by heartbeat checks. You may want to set higher intervals
for clusters with nodes located far apart from each other.
 For Failure Threshold, enter the number of consecutive
heartbeats that must pass without a response before a CC-SG
node is considered failed. Valid range is 2-10 heartbeats.
3. Click Update to save your changes.