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srajeswaran
Staff
Staff
March 27, 2025

Technical Tip: FortiManager HA configuration with more than 2 units

  • March 27, 2025
  • 0 replies
  • 386 views
Description

This article describes FortiManager's high availability (HA) configuration using manual mode with more than 2 units.

For high availability (HA) configuration with 2 units, refer to this document High Availability

Scope FortiManager.
Solution

Consider the following topology:

FortiManager-A is the designated Primary unit, and FortiManager-B and FortiManager-C will be the backup units.

 

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Configuration on Primary unit:

 

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Configuration on backup units:

 

image.png

 

Note: On Primary unit configuration, both backup nodes IP/Serial numbers are specified, but on backup nodes only the Primary unit IP/Serial number is specified. Backup units are not configured with the other backup unit details.

 

HA Status on Primary:

Both backup units are visible.

 

image.png

 

HA Status on Backup: 

Only the Primary unit is visible.

 

image.png

 

Related article:

Technical Tip: FortiManager HA cluster setup and troubleshooting