Automatic Exchange DAG Recovery for Complete Failure

The topic discloses all aspects behind DAG Recovery and how an automated software to recover failed DAG can reduce the complexities & enhance business continuity by EDB file.

DAG (Database Availability Group) is a feature of Exchange 2010 & 2013 server for disaster recovery. It provides automatic database-level recovery from Network, server & database failure. The process of Exchange 2013 and Exchange 2010 DAG server recovery is similar in all aspects.

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Issues & Dependencies over DAG:

  • Multiple servers & Recovery Commands increases complexity
  • No access to old data (only send & receive function is enabled for emails)
  • Dependency over Active Directory, Configuration Files, Lag files etc
  • Need to re-configure server settings & reset account

Steps for Running Exchange DAG Recovery for 2013 & 2010 Edition

Read the manual procedure to restore data of a DAG member using powershell scripts.

  1. Make sure server is live, all internal services are running correctly
  2. Remove the entire server from the DAG. If server to be removed is permanently offline then use Configuration Only parameter to avoid errors.
  3. Reset the server’s computer account in AD and re-install Exchange by running following script: setup /m:recoverserver
  4. Once the Setup recovery process finishes, then add the newly recovered server to DAG.

The aforementioned steps explain the process to recover Exchange 2010 dag member (server) and place it back into the same DAG by setting up credentials (name & IP).

How Software Restores All Data Easily from a Failed DAG!

Advanced software runs a server-independent mechanism to restore mailbox components from DAG member. The only pre-requirement is EDB files (database copies of particular member). Software directly restores mailboxes data from EDB file to overcome network failure, server crashes, service failure and database-level corruption.

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