Hi,
I am trying to understanding how cas array works in a site failover. We are going to have two sites SiteA and SiteB that will be connected via Gb link. Essentially we will have two Exchange 2010 Servers on each site ( CAS/HT & MBX). SiteA will be active and SiteB will be passive so we will manually bring online using DNS name changes, we will share all namespaces where possible i.e. autodiscver, ews etc.
Now my confusion is CAS Arrays. I will create a CAS Array for each AD Site and assign to local database.
so casarrrayA.domain.x and casarrayB.domain.x
In the occurrence of SiteA failure I will change the autodiscover, ews, owa records to point to SiteB. However how does this work for CAS Array as my second CAS Array is different DNS name i.e. how does Outlook Client pickup casararrayB.domain.x to connect to databases in SiteB?
Thanks
Celtic