System Config  HA
FortiGate Version 3.0 MR4 Administration Guide
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System Config
This section describes the configuration of several non-network features, such as 
HA, SNMP, custom replacement messages, and VDOM operation.
The following topics are included in this section:
• HA
• SNMP
• Replacement messages
• Operation mode and VDOM management access
HA, SNMP and Replacement messages are part of the global configuration of the 
FortiGate unit. Changing operation mode applies to each individual VDOM.
HA
FortiGate high availability (HA) provides a solution for two key requirements of 
critical enterprise networking components: enhanced reliability and increased 
performance. This section contains a brief description of HA web-based manager 
configuration options, the HA cluster members list, HA statistics, and the 
disconnecting cluster members.
For complete information about how to configure and operate FortiGate HA 
clusters see the FortiGate HA Overview, the FortiGate HA Guide, and the Fortinet 
Knowledge Center.
HA is not available on FortiGate models 50A, 50AM and 224B. HA is available on 
all other FortiGate modules, including the FortiGate-50B.
The following topics are included in this section:
• HA options
• Cluster members list
• Viewing HA statistics
• Changing subordinate unit host name and device priority
• Disconnecting a cluster unit from a cluster
HA options
Configure HA options so that a FortiGate unit can join a cluster or to change the 
configuration of an operating cluster or cluster member.
To configure HA options so that a FortiGate unit can join an HA cluster, go to 
System > Config > HA.
Note: For FortiOS v3.0 MR2 and previous versions, this HA section included extensive 
detail about HA. Starting with FortiOS v3.0 MR3 you should refer to the FortiGate HA 
Overview or the FortiGate HA Guide for the full HA story.