Exchange 2010

I attended the Microsoft Launch for Windows 7, Server 2008 R2 and Exchange 2010 here in Denver this week. My company http://www.statera.com/ was actually a sponsor and I worked our table for awhile. In the afternoon I was able to attend a couple sessions on Exchange 2010 with Harold Wong.
The first session was about Exchange 2010 high availability. One of the biggest changes in 2010 is the removal of Storage Groups, now you only deal with Databases. And with databases you can create Database Access Groups (DAG). A DAG consists of Databases and Mailbox servers for replication. Was is improved from Exchange 2007 is the fact that a database can be easily replicated to up to 16 mailbox servers. Also databases can be staggered to be active on multiple mailbox servers. You can have database one active on mailbox server 1, database 2 active on mailbox server 2 with each mailbox server having a replicated copy of the non-active database. This basically allows you to have an Active-Active cluster. Allowing an organization to utilize all mailbox servers for active user connections.
Another huge feature is the fact that you can now have the HUB and CAS role on a mailbox server that is participating in a DAG. in Exchange 2007 if you clustered the mailbox role you could not place any other roles on that server. Now a small to medium size company can have complete redundancy with only two servers running MB, HUB and CAS roles.

The Second session was about Archiving in Exchange 2010. Microsoft now offers Archiving naively in 2010, but it is a light implementation. The problem I see, as Harold pointed out, is the fact that the archive mailbox for a user's mailbox is located in the same database as the user mailbox. This configuration really kinda defeats one of the primary reasons to archive, move the archived mail off the primary mailbox server and storage and move to secondary storage. Harold stated that Microsoft is working on a fix to allow the archived mailbox to be setup on another database, this would probably be in a service pack for 2010. Another missing piece is a tool to automatically move messages and items from local PST files to the archive location. With the release a user would need to manually do this step.

More to come on Exchange 2010!