So far in this series of posts I have discussed the basic concepts of Exchange Server 2007 high availability, how to use Local Continuous Replication to protect mailbox databases on a single server, and how to cluster Exchange mailbox servers with Single Copy Clusters and Cluster Continuous Replication.  In this final post in the series I will discuss Exchange Server 2007 Standby Continuous Replication.

What is Standby Continuous Replication?

Standby Continuous Replication (SCR) for Exchange Server 2007 is a feature that was introduced with Service Pack 1.  SCR occurs between two servers – a source server and a target server.  The source server holds the active storage group and mailbox database, while the target server holds a replica of that storage group and mailbox database.

Exchange storage group and mailbox database information is replicated between the source and target server using asynchronous log shipping.  I described asynchronous log shipping in part one of this series on the fundamental concepts of Exchange Server 2007 high availability.  The same log shipping occurs in Local Continuous Replication and Cluster Continuous Replication.

SCR does not work like a cluster with automated fail over, rather it is much like LCR in that manual intervention is required in the event that the SCR source server experiences a failure.

Continue reading Exchange Server 2007 High Availability Part 5 – Standby Continuous Replication