Configuring DAG Mailboxes Exchange 2010 with a Remote Site for Disaster Recovery

We have 2 locations that are connected via a 100Mb Fibre VLAN provided by our ISP.

 Site 1 Main Office all users,     Site 2    Warehouse no local users

 Purpose of equipment in Site 2 is strictly to recover quickly from a disaster at Site 1.

 Plan is to have (2) Exchange 2010 servers in Site 1 both with CAS, HUB and Mailbox roles (EX1, EX2) and 1 Exchange 2010 server in Site 2 with CAS, HUB and Mailbox Roles (EX3).

  EX 1 will have a Mailbox database with DAG to EX2 and 3rd priority to EX3.
  EX 2 will have a Mailbox database with DAG to EX1 and 3rd priority to EX3.

 Enable DAC on the DAG
 Configure Alternate File Share Witness on Secondary DC in Site 2

  Exchange 2010 CAS Array including EX1, EX2   cas.domain.local

 cas.domain.local points to VIP on Load Balance Appliance.

 

Wondering if this is the best route to go for the customer or if there is a better solution?

Thanks

Harold
hpeetAsked:
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AmitIT ArchitectCommented:
Sounds good, however you need more planning, check this article: http://www.msexchange.org/articles-tutorials/exchange-server-2010/high-availability-recovery/designing-site-resilient-exchange-2010-solution-part1.html

Also note if you have other application using your exchange environment then you need to consider that also in HA design, like blackberry
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hpeetAuthor Commented:
When you say I need more planning.

Is there something specific that I missed that I need to include?

Please advise

Thanks

Harold
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