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Virtual Server 2005 and NICs

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  • Virtual Server 2005 and NICs

    Hi, guys.
    I am planning a virtualization project with the following scenario:
    2 HP DL360 G5 servers with 2 Quad Core CPUs and 8GB RAM, that come with a built-in dual port Gigabit Ethernet NIC (DL360R05 E5320 1GB, 438313-xx1, with modifications).
    The OS will be Windows Server 2003 R2 SP1, and I will use Virtual Server 2005 R2 for virtualization. I am planning to implement 3 VMs on each.
    An issue that was raised during a brainstorming session together with specialists was that the server is spending too much resources in emulating the virtual NICs to the physical ones, so the recommendation was to add to the servers another 4-port NIC and to allocate a physical port to each VM (I'm talking about HP NC364T PCI Express Quad Port Gigabit Server Adapter, 435508-B21). The issue will raise each server's cost by an additional $520.
    What do you think of it?

    Sorin Solomon


    In order to succeed, your desire for success should be greater than your fear of failure.
    -

  • #2
    Re: Virtual Server 2005 and NICs

    Unless the VSes are using massive amounts of CPU cycles the resources used by the NIC will not play any part in it what so ever. I have 4 VS running on dual core Xeon, 3GB RAM (not VS aware) and the CPU of the Host sort of peaks at 23% and Guest 65% under load. Admittedly the Guest is not running anything intensive, SharePoint 3 is the worst one when it is getting hit, so I may be barking up the wrong tree.

    Don't forget that you can assign 1 or 2 cores to the Guest and that is quite some grunt to be applying to the solution.

    What apps are going to be running on the Guest VS and is the Host just a VS machine or will it be running its own applications?
    1 1 was a racehorse.
    2 2 was 1 2.
    1 1 1 1 race 1 day,
    2 2 1 1 2

    Comment


    • #3
      Re: Virtual Server 2005 and NICs

      The host will only hold the VMs.
      2 of the VMs will be running Terminal Servers (a little bit network-intensive) with some 80 users together and the third will run an application that almost doesn't influence the network.
      I am planning to allocate every machine at least on core, this is the reason of buying 2 quad cores from the first place.

      Sorin Solomon


      In order to succeed, your desire for success should be greater than your fear of failure.
      -

      Comment


      • #4
        Re: Virtual Server 2005 and NICs

        Sorry Sorin but someone smarter than me (a dead squirrel maybe) will have to step up to the plate as I have nil, zero, zip, nada, nyet, nein, non experiance with TS, except with RDP of course, so I don't know how instensive the NIC activity gets in this case. However with 2 cores per VS I still don't see a problem from my simplistic view.
        1 1 was a racehorse.
        2 2 was 1 2.
        1 1 1 1 race 1 day,
        2 2 1 1 2

        Comment


        • #5
          Re: Virtual Server 2005 and NICs

          10nx, BigB. One of the people's biggest problem is to say "Hey, no idea." Everyone think that they should always say something. So, I appreciate your answer more than you know
          I need more to hear from the guys around, it looks like I will do the test anyway, after I'll set up the servers. I am going to buy the cards and send them back in their 14-days refund period if it will prove the issue is irrelevant.
          10nx again.

          Sorin Solomon


          In order to succeed, your desire for success should be greater than your fear of failure.
          -

          Comment


          • #6
            Re: Virtual Server 2005 and NICs

            Originally posted by sorinso View Post
            I am going to buy the cards and send them back in their 14-days refund period if it will prove the issue is irrelevant.
            10nx again.
            Clever, Solomon is indeed wise. Can you post back with the results as I think it would be of great interest, to me at least, and to others of course. Curious to know how much recource the Virtual NICs will use in these circumstances.
            1 1 was a racehorse.
            2 2 was 1 2.
            1 1 1 1 race 1 day,
            2 2 1 1 2

            Comment


            • #7
              Re: Virtual Server 2005 and NICs


              I intend to post the whole process at the end of it, to share it with everyone. If not all of it, at least the important/interesting parts.

              Sorin Solomon


              In order to succeed, your desire for success should be greater than your fear of failure.
              -

              Comment

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