The following hardware and software requirements must be met to provide HA failover or cluster functionality:
Valid license with the high availability option enabled (for the stand-by unit you only need an additional base license).
Two UTM units with identical software versions and hardware or two UTM appliances of the same model.
Heartbeat-capable Ethernet network cards. Check the HCL to figure out which network cards are supported. The HCL is available at the Sophos Knowledgebase (use "HCL" as search term).
Ethernet crossover cable (for connecting master and slave in a hot standby system). UTM appliance models 320, 425, and 525, whose dedicated HA interface is a Gigabit auto-MDX device, can be connected through a standard IEEE 802.3 Ethernet cable as the Ethernet port will automatically exchange send/receive pairs.
Network switch (for connecting cluster nodes).
---------- Sophos user, admin and reseller. Private Setup:
No you can't use a 220 and a 320 together in High-Availability. Not only are they too dissimilar, but the 220 license won't work on a 320 and vice-versa.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
No you can't use a 220 and a 320 together in High-Availability. Not only are they too dissimilar, but the 220 license won't work on a 320 and vice-versa.
Cheers - Bob
Double confirmation dissimilar hardware will not work in HA
