According to Endpoint Security Management Server Administration Guide R80.20 p.74ff:
Installing and Configuring an Endpoint Policy Server
We recommend that you use a distributed deployment that contains external Endpoint Policy Servers on dedicated computers.
• Install at least one Endpoint Policy Server for each remote site.
• For larger sites, install many Endpoint Policy Servers to improve performance.
An Endpoint Policy Server is a Log Server that you configure as an Endpoint Policy Server.
An Endpoint Security Management Server will support and communicate with a large number of Endpoint Policy Servers that communicate with the Endpoint Clients.
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