We don't have any Blackberry, but around 50 mobiles with Activesync. For archiving, I downloaded trial of GFI to see if it fits our needs, means how users access it. I don't know for any other good product.
For CAS/HT, honestly I didn't read anything, I wanted to know whether each Mailbox Role Server uses its partner in normal circumstances, or CAS/HT work both in the same time sharing the load.
I want to put it top priority, because this weekend I was trying to do some restore in a new server, and I couldn't catalog the tape. Everything is new, tape is working. I still don't know what is going on. I'm going to write to HP, and to see if they have any idea, any frimware, driver or..
I have a new server staying in standby, and I wanted to use its memory, since it is not doing anything.