In Part 1 of my video blogcast series on High Availability in Exchange Server 2010, I introduced you to the concept of database mobility, and the features known as database availability groups (DAGs) and mailbox database copies.

In Part 2, I showed you how to create a DAG and how to add Mailbox servers to a DAG.

In Part 3, I showed you how to add a mailbox database copy, and I demonstrated Get-MailboxDatabaseCopyStatus and Test-ReplicationHealth.

In Part 4, the final part of this blogcast series, I perform a database switchover using the Exchange Management Console, and show you a switchover from an administrator's perspective.  Then, I perform a second database switchover using the Exchange Management Shell, and show you a switchover from an Outlook Web Access user's perspective.

Please download the video and watch it full-screen.  Part 4 is just under 4½ minutes. Click on the video thumbnail below to go to the video. There is a Download link where you can download the video (use Right-click, Save Target As...).

Part 4:

http://msexchangeteam.com/videos/9/drandha/entry451602.aspx

I hope you enjoyed this blogcast series. For more information see the High Availability and Site Resilience section of the Exchange Server 2010 (Beta) Help.

I'd also like to invite all of you to check out the Exchange Server 2010 forum and the Exchange Server 2010 Training Portal.

http://msexchangeteam.com/archive/2009/06/14/451609.aspx