Installation guide

Exchange 2003 Cluster and Single Copy Cluster (SCC) for Exchange 2007

Both configurations are failover cluster solutions based on a shared storage. Each of them uses a

single copy of a storage group on storage that is shared between the cluster nodes. Only one cluster

node can access (manage) shared data at a time. The node that is currently managing shared data is

called an active node. Other nodes are called passive or standby.

Cluster Continuous Replication (CCR) for Exchange Server 2007

CCR is a failover cluster solution based on a non-shared storage. It uses two copies (active and

passive) for each storage group. Each copy is hosted on its own node. The copy that is currently in

use is called active, and the node hosting this copy is called the active node. The passive copy is

created and maintained on the passive node using continuous and asynchronous log shipping

technology.