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Exchange 2007 transition with lowest hardware cost

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  • Exchange 2007 transition with lowest hardware cost

    Hi,

    We are looking for the lowest hardware cost setup to upgrade our exchange 2003 cluster to exchange 2007.

    I would like to know which clustering or HA scenarios to implement, i.e SCC or CCR.
    We have a budget of 3 server nodes; two for Mailbox with DiskArray and one for Hub/CAS roles but seems the DiskArray is costing higher, and increasing our budget.

    So any guidance in which scenario to move ahead with exchange 2007 HA.

  • #2
    Re: Exchange 2007 transition with lowest hardware cost

    For E2007 it depends on what type of HA you want to have. If you think about active clustering then CCR is the way to go, but to have failover at the front end you would need 2 server for HUB/CAS as well.

    If you don't mind a little bit manual work after a server failure you can stick with SCR and replicate the databases each to the other server. In a case of a failure you have to have a script (or even more manual work) to activate the replicated databases. The benfit here would be that you need only two server since you don't have to separate the roles.

    No matter if you want to have several copies of the databases you have to provide the necessary disk space.
    Last edited by FischFra; 20th April 2010, 10:11.

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    • #3
      Re: Exchange 2007 transition with lowest hardware cost

      Basically i am tring to save on DiskArray, and invest the same to server machine.
      So CCR without the SAN(Disk Array) was my initial idea.
      But we would require to have a failover scenario. so can we setup as:
      2 nodes for MB role
      2 nodes for HT/CAS roles (both in one machine)

      Now my concerns is the performance provided by CCR, compared to SAN/DiskArray.

      Could you guide me.

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      • #4
        Re: Exchange 2007 transition with lowest hardware cost

        For performance reasons you can run E2007 server with DAS and SAS disks, depending on the number and size of mailboxes it should be sufficient.

        To make sure you can run jetstress on your preferred configuration.

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        • #5
          Re: Exchange 2007 transition with lowest hardware cost

          I don't see the point in putting both nodes of the CCR on the same machine. What does that achieve? Makes life easier for patching, but that is about it.

          The major place where performance is gained with Exchange is always storage. Storage storage storage. It is the one place that you don't want to cut costs unless you want to cripple the performance of the system.

          Given that Hub/Cas doesn't require much storage performance, one way that you could do it is two physical machines, four virtual.
          Then SCR.

          Another option would be two node Exchange 2010 DAG.

          Not really enough information to make any kind of recommendation though.

          Simon.
          --
          Simon Butler
          Exchange MVP

          Blog: http://blog.sembee.co.uk/
          More Exchange Content: http://exchange.sembee.info/
          Exchange Resources List: http://exbpa.com/
          In the UK? Hire me: http://www.sembee.co.uk/

          Sembee is a registered trademark, used here with permission.

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          • #6
            Re: Exchange 2007 transition with lowest hardware cost

            Sembee:
            its four machines with CCR:
            Two for Mailbox
            Two for HT/CAS
            Removing the Storage DiskArray.

            We have less than 100 mailboxes (to be exact: 78 mailboxes).

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            • #7
              Re: Exchange 2007 transition with lowest hardware cost

              I wouldn't even be considering CCR (or Exchange 2003 cluster) for that number of users. I would not be able to justify the cost of the licences.

              The most I would be able to justify is two standard severs with an SCR on the second server, which I have deployed a number of times. Anything else is just an overkill - particularly in this economic environment.

              Simon.
              --
              Simon Butler
              Exchange MVP

              Blog: http://blog.sembee.co.uk/
              More Exchange Content: http://exchange.sembee.info/
              Exchange Resources List: http://exbpa.com/
              In the UK? Hire me: http://www.sembee.co.uk/

              Sembee is a registered trademark, used here with permission.

              Comment

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