I just called RIM for an issue and received a message that they will be 'performing disaster recovery failover testing' on Saturday, July 14th, between 2:00am and 6:00am Eastern time.
They said that service will be 'minimally impacted' if the requirements in this KB article are followed:
BlackBerry Search Results
Didn't say what would happen if the BES doesn't have those requirements. Didn't state if this was for North America only, but since I believe that's the group I call into, that'd be my guess...but just a guess.
Would have been NICE TO GET AN EMAIL instead of finding out by calling them for another issue!!!