We will be updating MBOX1 and CAS2 on the ROCKERDUCK cluster tonight starting at 9:00 PM Eastern to Exchange 2010 SP1 RU4-v2

During the upgrade, users connected to CAS2 will automatically switch over to CAS1 as we will begin to drain the server connections around 8:45 PM Eastern.

Users with mailboxes on MBOX1 will have the passive copy of their database on MBOX2 activated around 8:50 PM Eastern.

The maintenance schedule should be transparent to users and should not interrupt or disrupt any service.