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 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...).