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Blackberry Exchange Server migration, necessary?

I have a two site AD with a DAG and every mailbox role on both of my exchange servers.  I'm making my secondary site my primary site and I'm trying to plan how to deal with the Blackberry server that was installed on my primary exchange.  If I change all DNS to route mail, owa, activesync, etc to the new Exchange do I need to migrate the BES as well?  Is there a way to do a backup and restore?  What kind of suggestions do you have?
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LrdKanien
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LrdKanien
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irweazelwallisCommented:
What Version of BES are you running?
if you want resilience with BES then you can use the in built functionality.
But first bit of advice is move BES of exchange and have it on a separate server then it will be easier to deal with
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LrdKanienAuthor Commented:
how do I tell what version I have?

I'm not much of a blackberry administrator.  Please be very detailed.
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d3ath5tarCommented:
If the BES Services are still online and you have CAS Array setup correctly, it should follow the array when mbx's failover.

You can use your SRP Key on two installs and have one active, one passive BES.
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irweazelwallisCommented:
go to add remove programs and look at the details it will tell you the version.
But as a guide if you have a web console then it will be version 5 if not its version 4.
If you have exchange 2010 then you should have 5.xx

here is the Blackberry guide to it
http://us.blackberry.com/ataglance/get_the_facts/BES5_High_Availability.pdf
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LrdKanienAuthor Commented:
I don't think I have a CAS Array.  I have 2 Exchange servers and they both have all of the roles.

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LrdKanienAuthor Commented:
Blackberry Server Enterprise Express for Microsoft Exchange.

I can't see the version in Add and Remove programs.
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irweazelwallisCommented:
if its express then you are running version 5.xx

there is no high availability built into BES Express

if all you are doing is moving the DAG groups between servers then there is no issue with doing nothing with BES it will carry on working.

How is your CAS server setup then? what urls do you have for the OWa, ACtive Sync etc etc
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LrdKanienAuthor Commented:
Two Exchanges.

1.  Exchange - Datacenter
2.  DR-Exchange - Office

Postini delivers mail to Exchange and Exchange and DR-Exchange have the mailbox databases in a DAG.  I want mail delivery to go to DR-Exchange and I plan on removing everything at the Exchange location.

I'm ready to change DNS for mail delivery, but I think it will break the BES.
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irweazelwallisCommented:
removing as in uninstalling?
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LrdKanienAuthor Commented:
Most likely.  The RAID it was built on is done incorrectly and the iSCSI targets are not VLAN'd out, which caused all sorts of I/O issues.

I need to get all services off of this server/site/location ASAP.
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LrdKanienAuthor Commented:
My question is:

If I change DNS to route mail to the new Exchange server will this break the BES?
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irweazelwallisCommented:
bes should be able to find the exchange via active directory - if the BES account still has a mailbox in the right place then it should be fine.
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