Ehlo All,
I've been involved (meaning supporting) BlackBerry Exchange Servers (BES) for 5 years or so, and I just found out about the failover process of BES 4.0 & 4.1. RIM calls it "knife-edge cutover". This is a pretty cool capability that's not too difficult to implement.
I'm a big believer in reading documentation, and didn't know about this until another IT tech casually mentioned this in passing while we discussed virtualization. To summarize, it allows you to quickly failover to a new BES without the need to reactivate BlackBerry devices for end users. So, it allows you to upgrade server hardware, replace a virtual machine (which we recently did and used this approach), or test fail-overs. It worked flawlessly. BlackBerry users didn't even know we failed over to a new vm (virtual machine) since it took only a few minutes. A client's BES vm was having issues, so we used a base vm image and setup BES capability, and then perform a knife-edge cutover. Problem solved, and I'm sure we won't be touching that image for many more years.
Enjoy this gift.... RIM's KB10278 instructions about knife-edge cutover for BES 4.0 & 4.1
-Ben
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