2 Replies Latest reply on Jul 30, 2018 10:40 AM by amardeep.sidhu

    Exadata DB Server 3EA Configuration

    1166824

      Hi,

       

      I have a question about Exadata X7-2 1/8 Rack DB Server 3 Configuration

      As you know, 1/8 Rack has 2 DB Server and the minimum CoD for 1/8 Rack is 8 core.

      If 1/8 Rack plus 1 more DB sever(Minimum CoD is 14 Core, because Quarter Rack DB server is the smallest spec in order to extend server)

      the CPU configuration of  3 DB Server is 8, 8, 14 Core.

      Is it possible configuration?

      or is it unstable configuration?

       

      If unstable, we need to configuration like 14, 14, 14  core.

       

      If you know the information or reference, please let me know that.

       

      Thank,

        • 1. Re: Exadata DB Server 3EA Configuration
          Andris Perkons-Oracle

          Hi,

           

          this is possible, but one has to ask what are you trying to achieve? If you only need 30 Cores (8 + 8 + 14), then a standard 1/8 rack is fully capable of delivering that, without having to add additional DB servers.

          One thing to consider in your 8 + 8 + 14 config: If you are creating a 3-node RAC, then you will lose almost 50% of your compute resources should the 3rd node fail.

           

          Andris

          • 2. Re: Exadata DB Server 3EA Configuration
            amardeep.sidhu

            That is very much possible and a common scenario when people add newer generation DB nodes to an existing Exadata rack. With each new generation hardware, number of cores keeps going up. So if the new nodes are getting added to the same RAC cluster, nodes are going to have different number of cores.

             

            In a 3 node scenario, you need to think about the cases that Andris mentioned above.