IS it possible to have ESX hosts in the same DRS/HA Cluster that have differing DNS suffixes
ie 3 are alpha.com and 3 are delta.com
is it a case of ensuring resolution between the six?
Yes it is.
You can use any domain names for esx hosts.
1 .Domains must be search domains on esx hosts.
2. Domains must know about each other.
make entries in hosts files of each host machine
Thats what I am doing entering all into the hosts file as permissions are causing a prob with nslookup queries although they can see each other and ping.
Will post results and award points soon.