Exchange Server 2007 – High Availability
Local Continuous Replication
Whenever we talk about high availability what does it mean? It is nothing but keeping server alive as much we can. In Exchange 2003 or earlier version we had a concept called as clustering where we had a shared disk & Quorum Disk and in shared disk we use to store the exchange database & if one node fail other node will take the ownership.
In Exchange 2007 we have some new features in terms Exchange High Availability:
Local Continuous Replication (LCR)
Cluster Continuous Replication (CCR)
Single Copy Cluster (SCC)
Standby Continuous Replication (SCR) - It is only supported in Exchange 2007 SP1 version
We will take a walk on each and every features which I described right now so that we can understand the basic concept and steps.