Got some questions from one of our customers about Exchange 2010 archiving. First of all its important to understand that the solution proposed by Microsoft is like having a second mailbox in the same database. I’m sure the technology will evolve later on but this seems kind of a drawback to me.
You can either read the details on the Exchange 2010 product home page or checkout this assessment (less Marketing!) from Ferris Research. Screenshot junkies on the other hand can check out this blog post from The Three UC Amigos. Last but not least there’s a TechNet webcast coming up (10th of June) which covers the new “Archiving & Retention” features.
Update 2009-06-26: Noticed an interesting discussion in the TechNet forums covering the “Personal Archive” feature.