High Availability Choices for Exchange Server 2007: Continuous Cluster Replication or Single Copy Clustering
Each year, more organizations are determining that e-mail is a mission-critical application that hosts an increasing share of intellectual property. With this reliance on e-mail services, the need for highly available systems where messaging services must be accessible at all times has become more apparent, and organizations are making significant investments in their messaging systems. Many organizations have come to the conclusion that redundancy is the only reliable way to keep e-mail services continuously available to their users. Exchange Server 2007 includes numerous high availability options that provide continuity of service and redundancy to help ensure messaging services are always up and operational.