# “Microsoft Exchange Server” Backup

This Protected Item type backs up Microsoft Exchange Server databases. The underlying technology is VSS and is compatible with Microsoft Exchange Server 2007 and later, including Exchange Server 2016 (the latest version at the time of writing).

The appropriate VSS writer must be installed.

As Exchange Server can only be installed on Server SKUs of Windows, this backup type is only applicable when running on Windows Server.

Some forms of Exchange Server backup will cause log truncation to occur on the Exchange Server. For more information, please see the official Exchange Server documentation. If circular logging is enabled on the Exchange Server, the 'Incremental' and 'Differential' backup types have limited effect.

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