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Last update: 2022-04-26


You can deploy the Sophos Firewall virtual appliance in a VMware ESX or VMware ESXi environment.


  • Install VMware ESX or VMware ESXi 5.0 or later on a server that meets the minimum hardware requirements below.
  • Install vSphere Client (VMware management software) on a management device that has network access to the server.

For instructions, go to the vSphere installation and setup guide.

Hardware Specification
vCPU 1
vRAM 4 GB minimum
vNIC 2
Primary disk 16 GB minimum
Report disk 80 GB minimum

If you don't meet the minimum requirements for new installations of SFOS 18.0, or if you're migrating from an earlier version, Sophos Firewall goes into fail-safe mode.


Configure the vCPU and vRAM based on the purchased license. Don't exceed the maximum number of vCPUs specified in the license.

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