SCCM 1806 – Site server high availability

Starting in Configuration Manager version 1806, high availability for the site server role is a Configuration Manager-based solution to install an additional site server in passive mode. The site server in passive mode is in addition to your existing site server that is in active mode. A site server in passive mode is available for immediate use, when needed. Include this additional site server as part of your overall design for making the Configuration Manager service highly available.

A site server in passive mode:

  • Uses the same site database as your site server in active mode.
  • Doesn’t write data to the site database when it’s in passive mode.
  • Uses the same content library as your site server in active mode.

To make the site server in passive mode become active, you manually promote it. This action switches the site server in active mode to be the site server in passive mode. The site system roles that are available on the original active mode server remain available so long as that computer is accessible. Only the site server role is switched between active and passive modes.

Find out more here: https://docs.microsoft.com/en-us/sccm/core/servers/deploy/configure/site-server-high-availability

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