Hi all, I would like to ask for help on how to configure high availability in-TRANSPORT-HUB Exchange Server 2010 SP2 Basically my setup is as follows: 3 MailBox+ 2DAG 1-TRANSPORT-HUB 2 CAS balanced and redundant via WNLB 2 EDGE for load balancing using round robin DNSand MX records Now my question is as follows: in practice all the components of my infrastructur eare redundant with the exception of the precisely-TRANSPORT-HUB which also acts as aserver for witness DAG. I would like to know what procedure to use for the role HUB-TRANSPORT. Can I install it for example on one of the machines that form the CAS and the procedure is transparent,so if the TRANSPORT-HUB "primary" itcomes down "in action" the secondary or do I follow a different procedure? Thanks for the help, Luca

Luca, High Availability for the Hub Transport role is achieved by installing 2 or more Hub Transport servers per Active Directory site. You only have one Hub Transport role installed. You can install the Hub Transport role on the same server as the CAS role if you would like. A very typical scenario would be to install Exchange onto 4 servers, 2 with CAS/HT and 2 with Mailbox role (in a DAG). http://technet.microsoft.com/en-us/library/dd638137.aspx#HA Hub Transport You can deploy multiple Hub Transport servers for internal transport high availability. Resiliency has been designed into the Hub Transport server role in the following ways: Hub Transport server to Hub Transport server (intra-organization) Hub Transport server to Hub Transport server communication inside an organization automatically load balances between available Hub Transport servers in the target Active Directory site. Mailbox server to Hub Transport server (intra-Active Directory site) The Microsoft Exchange Mail Submission service on Mailbox servers automatically load balances between all available Hub Transport servers in the same Active Directory site. Unified Messaging server to Hub Transport server The Unified Messaging server automatically load balances connections between all available Hub Transport servers in the same Active Directory site. Edge Transport server to Hub Transport server The Edge Transport server automatically load balances inbound SMTP traffic to all Hub Transport servers in the Active Directory site to which the Edge Transport server is subscribed. MCITP Exchange 2010 | MCTS Exchange 2007 | MCITP Lync Server 2010 | MCTS Windows 2008 | MCSE 2003

So I can safely install the HUB-TRANSPORT role of one of my servers that have the CAS role installed to provide redundancy and load balance, correct? Once installed the second TRANSPORT-HUB must perform some configuration on this particular role or the process is transparent? Thanks again, Luca

Perfect. Thanks a lot, Luca

Perfect. Thanks a lot, Luca

Yes, you can install the HT role on another CAS server. The process is mostly transparent. The only thing you may want to do is configure the Default Receive Connector under Server Configuration>Hub Transport to allow Anonymous connections. This will allow you to receive email from the Internet. You could also create additional Receive Connectors for special purposes if needed, for example, for internal applications.MCITP Exchange 2010 | MCTS Exchange 2007 | MCITP Lync Server 2010 | MCTS Windows 2008 | MCSE 2003

Perfect. Thanks a lot, Luca

Luca, High Availability for the Hub Transport role is achieved by installing 2 or more Hub Transport servers per Active Directory site. You only have one Hub Transport role installed. You can install the Hub Transport role on the same server as the CAS role if you would like. A very typical scenario would be to install Exchange onto 4 servers, 2 with CAS/HT and 2 with Mailbox role (in a DAG). http://technet.microsoft.com/en-us/library/dd638137.aspx#HA Hub Transport You can deploy multiple Hub Transport servers for internal transport high availability. Resiliency has been designed into the Hub Transport server role in the following ways: Hub Transport server to Hub Transport server (intra-organization) Hub Transport server to Hub Transport server communication inside an organization automatically load balances between available Hub Transport servers in the target Active Directory site. Mailbox server to Hub Transport server (intra-Active Directory site) The Microsoft Exchange Mail Submission service on Mailbox servers automatically load balances between all available Hub Transport servers in the same Active Directory site. Unified Messaging server to Hub Transport server The Unified Messaging server automatically load balances connections between all available Hub Transport servers in the same Active Directory site. Edge Transport server to Hub Transport server The Edge Transport server automatically load balances inbound SMTP traffic to all Hub Transport servers in the Active Directory site to which the Edge Transport server is subscribed. MCITP Exchange 2010 | MCTS Exchange 2007 | MCITP Lync Server 2010 | MCTS Windows 2008 | MCSE 2003

Yes, you can install the HT role on another CAS server. The process is mostly transparent. The only thing you may want to do is configure the Default Receive Connector under Server Configuration>Hub Transport to allow Anonymous connections. This will allow you to receive email from the Internet. You could also create additional Receive Connectors for special purposes if needed, for example, for internal applications.MCITP Exchange 2010 | MCTS Exchange 2007 | MCITP Lync Server 2010 | MCTS Windows 2008 | MCSE 2003

I implemented the second TRANSPORT-HUB created on the same the new connector and everything works perfectly. Thank you,

I implemented the second TRANSPORT-HUB created on the same the new connector and everything works perfectly. Thank you,

I implemented the second TRANSPORT-HUB created on the same the new connector and everything works perfectly. Thank you,

Good to hear! Please close the question for me. Thank you.MCITP Exchange 2010 | MCTS Exchange 2007 | MCITP Lync Server 2010 | MCTS Windows 2008 | MCSE 2003