Sign in
 
HomeOnline20132010Other VersionsLibraryForumsGalleryEHLO Blog
TechCenter >
> 
> 
Exchange 2010 and 2003 co-existance design and work load

Discussion Exchange 2010 and 2003 co-existance design and work load

  • Monday, May 21, 2012 2:35 PM
     
     
    Sign In to Vote
    0

    Hi,

    My client has Exchange 2003 and 2010 in co existance mode with multiple sites.

    In the main site they have 2 HUBCAS servers in the CAS array(Due to some issue one HUBCAS server has been stopped from NLB) and 3 maibox servers, there are few more sites in that one site has a single server with MB/HUB/CAS role enabled on it and the 2nd site is the DR site has a single HUBCAS server with 3 mailbox server. The 3rd site doesnot have any exchange server and they are accessing mail using RPC with in the WAN. There are some international sites also connecting via RPC/HTTP which has Exchange 2003 server also.

    Considering all these servers are in a different subnet, so they are using firewall in between with all the necessary ports opened between point to point. In the main site the Domain controllers resides in another subnet(Not in the same exchange servers subnet).

    As one HUBCAS server has been stopped from NLB assuming all the users connects to the CAS ARRAY where as it has only one HUBCAS server now on it. The second server is just a HUB Transport server now. The total mailbox users are around 5000 in the Exchange organization.

    The HUBCAS one is the server, has conector for Exchange 2003 also for all the sites. they have Exchange 2003 BE servers in 4 sites as well as with 2 frontend servers.

    Issue1: Users from the remote sites (other than main office) are always feeling delay in mail submission or delivery(They connect via RPC/HTTP)

    Issue2: The Exchange management console is very slow on searching mailbox or any activities in the EMC.

    We are assuming, increasing the number of HUB and CAS servers in the main office may help in the mail submission and get rid of EMC slowness!

    Any Suggestions.

    Arul

     

All Replies

  • Monday, May 21, 2012 11:14 PM
     
     
    Sign In to Vote
    0

    Hi Arul Nathan,

    This is a training and certification forum. As your question relates to neither of these, I will move it to a more appropriate forum.<o:p></o:p>


    When you see answers and helpful posts, please click Vote As Helpful, Propose As Answer, and/or Mark As Answer

    Jeff Wharton
    MSysDev (C.Sturt), MDbDsgnMgt (C.Sturt), MCT, MCPD, MCSD, MCITP, MCDBA
    Blog: Mr. Wharty's Ramblings
    Twitter: @Mr_Wharty
    MC ID: Microsoft Transcript

     
  • Tuesday, May 22, 2012 3:06 AM
    Moderator
     
     
    Sign In to Vote
    0
    Hi
       AS far as I know, RPC/http rate depends on network, route table, firewall setting.
       increasing cas/hub server won't significantly affects rate.

    Terence Yu

    TechNet Community Support