We have 3 sites involved in the implementation - S00 - hosts TMG, 2 X CAS, 2 x HUB, this is the primary route for smtp, web app, etc S01 - 2 x CAS, 2 X HUB, DAG1. approx 700 users S09 - 2 x CAS, 2 x HUB, DAG2. approx 600 users all is working fine and we have migrated few test users from our current exchange 2007, looking at the configuation of a load balanced cas array, so created the DNS for outlook.domain.us set to the VIP of the NLB for the CAS servers at S01, created the array with site settings of "S01" and then set the mailboxdatabase to use the CAS array address "outlook.domain.us" all seems fine and I can connect new clients, what I am not sure about is what to do about the rpc client array at site 09 and site 00, if outlook.domain.us uses the VIP address of the S01 NLB then what do I use at the other sites? many thanks

Hi You should create one cas array for each site Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

Hi Jonas what fqdn should I use for the other sites if I've used outlook.domain.us for the first array? thanks Jez

hmm... it's up to you You could use casarrays00.domain.local casarrays01.domain.local casarrays09.domain.localJonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog