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Old 01-17-2012, 03:22 AM   #1 (permalink)
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Default BES 5 and Exchange 2010 DAG / High Availability

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Hi,

I'm just wondering if anyone has any experience of implementing a high availability BES 5.0 environment, with Exchange 2010 Database Availability Groups and MULTI DATACENTRE ENVIRONMENTS.

I understand that Exchange 2010 can be multi DC, and that SQL backend can be clustered or mirrored accross DC's, the question I have is around is around the BES front end server. I have read the following document "us.blackberry.com/ataglance/get_the_facts/BES5_High_Availability.pdf" which clearly. I know we have the option of creating a "BlackBerry Enterprise Server" pair and I understand how this would be beneficial for High Availability in 1 DC......but I cannot see this as being a viable solution for multi dc environments, for example you could end up with an Exchange Server (CAS) being and a SQL server working in 1 DC and a BlackBerry Enterprise server running in another DC (this would throttle our WAN links).

Any suggestions (other than SAN level replication)???

Please Help!!!

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Old 01-19-2012, 06:51 AM   #2 (permalink)
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Default Re: BES 5 and Exchange 2010 DAG / High Availability

We don't have our DAG across multiple data centres (our links weren't fast enough), but the BES server doesn't connect to the mailbox servers, but to the CAS boxes, so wherever local MAPI clients are connecting, BES will too (obviously that will vary depending on your CAS high-availability solution (load balancers, NLB, DNS, or whatever).
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