Skip to content
The XG Series hardware appliances will reach end-of-life (EOL) on March 31, 2025. Click here to see the XG to XGS migration documentation.

Page permalink

Always use the following permalink when referencing this page. It will remain unchanged in future help versions.

https://docs.sophos.com/nsg/sophos-firewall/21.0/Help/en-us/webhelp/onlinehelp/index.html?contextId=system-services-HA

High availability

You can configure a high availability (HA) cluster in active-passive and active-active modes on Sophos Firewall.

For more information see About high availability.