Sophos Firewall v18: Configure High Availability Mode Part 1 - HA Modes and Setup Prerequisites

Jay from Sophos Support goes over the fundamentals and prerequisites you need to know before configuring High Availability Mode. Afterward, check out Part 2 of the HA series covering configuration here:
https://techvids.sophos.com/watch/CXgWk46RoUrF2MXQ4fqLQW

Skip ahead to these sections, or use the top bar in the video:

00:00 Overview
00:51 Architecture
03:05 HA Modes
04:41 Failover Triggers
05:00 Prerequisites

Relevant Documentation:

High Availability Prerequisites:
https://support.sophos.com/support/s/article/KB-000035744?language=en_US#prerequisites

High Availability Licensing Requirements:
https://support.sophos.com/support/s/article/KB-000036497?language=en_US

Common High Availability Failover Triggers:
https://docs.sophos.com/nsg/sophos-firewall/18.0/Help/en-us/webhelp/onlinehelp/nsg/sfos/haStartupGuide/concepts/HAOperation.html

High Availability Startup Guide:
https://docs.sophos.com/nsg/sophos-firewall/18.0/Help/en-us/webhelp/onlinehelp/nsg/sfos/haStartupGuide/concepts/AboutHighAvailability.html

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