Hi, actualy we have only one server, we are talking to implement H.A to our server with 'SCR' feature using a new server on our datacenter. We have Exch2k7 std licenced to 60 mailbox today at the main office, so here is the question: - Do we need buy the same amount server/call licences to another/new side?????? tks, Renato P

First off, SCR will not be true HA. It will be a manual failover. For licensing you should get with your microsoft rep to get a final answer. My understanding is that you will need to license the server, just like you would any other server (OS and product). You will not need any user cals, as you have already licensed them.Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington

That is my understanding too, however, Microsoft recently changed SQL licensing so that if you have a TRUE DR SQL box which you are just replicating data to, you dont need a SQL license. You do need a Windows license, but not SQL. This is for Enterprise Edition FWIW

Hi jr3151006 You can know more about SCR from this document: Standby Continuous Replication http://technet.microsoft.com/en-us/library/bb676502(EXCHG.80).aspx For the licensing issue, maybe you can use below methods to get relevant help: Search for a reseller near you https://solutionfinder.microsoft.com/ Contact a Volume Licensing specialist http://www.microsoft.com/licensing/contact-us.aspx Find worldwide product key Activation Centers http://www.microsoft.com/licensing/existing-customers/activation-centers.aspx Thanks, Evan Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.