CAS Array Object and MS Exchange 2010

2016/04/20 17:18

Where the Exchange 2010 installation starts ? Is it at Exchange 2010 Prerequisites or is it at CAS Array Object setup ?

Note the items 5 and 6 at Demystifying the CAS Array Object from Brian Day, Premier Field Engineer, Messaging.

  1. A CAS array object does not load balance your traffic
  2. A CAS array object does not service Autodiscover, OWA, ECP, EWS, IMAP, POP, or SMTP
  3. A CAS array object's fqdn does not need to be part of your SSL certificate
  4. A CAS array object should not be resolvable via DNS by external clients
  5. A CAS array object should not be configured or changed after creating Exchange 2010 mailbox databases and moving mailboxes into the databases
  6. A CAS array object should be configured even if you only have one CAS or a single multi-role server.

Typical example and solution for setting CAS Array after the database has been already created - Exchange 2010 moving to CAS array setup

Set-MailboxDatabase <name of DB> -RpcClientAccessServer “”

Additional reading:

How to setup an Exchange 2010 CAS Array to load balance MAPI

How to Install an Exchange Server 2010 Client Access Server Array using Windows Network Load Balancing

Exploring Exchange 2010 RPC Client Access service