Right before the year end, Scott Schnoll wrote a new article about Exchange Server 2010 High Availability.
Read the introduction here and then, proceed reading on his original post :
Now that Exchange Server 2010 has had its first birthday, it's a good time to remind folks about the built-in features for high availability, site resilience and disaster recovery in Exchange 2010. If you're already running Exchange 2010, then you probably already know about database availability groups, mailbox database copies, and Active Manager. But if you're running Exchange Server 2007 or Exchange Server 2003, there will be new concepts and technology with new benefits for your organization as you upgrade to Exchange 2010, such as incremental deployment, datacenter switchovers, and recovery databases.
Building on the native replication capabilities introduced in Exchange Server 2007, Exchange 2010 integrates high availability into the core architecture of Exchange, enabling customers of all sizes and in all segments to economically deploy a messaging continuity service in their organization. Exchange 2010 reduces the cost and complexity of deploying a highly available and site resilient messaging solution while providing higher levels of end-to-end availability, simplifying administration, and supporting large mailboxes.
Original post can be seen at :
Great article, as usual :)