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21 Dec

The other members receive the file into their replay queue, and then replay the transaction log file into their own passive copy of the database.

File mode replication works fine but has an obvious shortcoming in that any transaction logs that have not yet been shipped to other servers in the DAG can be lost if the Exchange server hosting the active database copy fails.

In this tutorial I will demonstrate the installation of an Exchange Server 2010 Database Availability Group on Windows Server 2008 R2.

For this tutorial the following Exchange servers have already been installed.

Click the Manage button to commence adding the Mailbox servers to the DAG.

Right-click the newly created Database Availability Group and choose Properties.

This is typically a Hub Transport server though it can technically be any compatible Windows server.

There are two ways that mailbox database replication occurs between Exchange Server 2010 DAG members.

Note that Public Folder databases can reside on Mailbox servers that are members of a Database Availability Group, however they are not replicated by the DAG itself.

Instead you must use Public Folder replication to provide redundant copies of Public Folder databases.