Exchange 2010 CAS Array - 2 Sites

So here is what I have done.. I'm really hoping someone can give me some feedback here that has more knowledge in this area:

 

 

SITE A:

 

 

* Created a CAS array with FQDN of "array-siteA.domain.com"

 

 

SITE B:

 

 

* Created a CAS array with FQDN of "array-siteB.domain.com"

 

 

On the LTM's at each side there are three VIP's which handle RPC - one for MAPI, one for Address Book, and one for the RPC endpoint mapper. These VIPs are fronted by GTM's at each location, and the Wide-IP for this service is "array.domain.com." Then, I simply created two CNAMEs for "array-siteA" and "array-siteB" to point to "array.domain.com" Therefore, array.domain.com points to whichever site is active at the moment as determined by GTM.

 

 

Does this sound correct?