High Utilization Cluster

  • 79man 10 years ago + 1 comment

    For three VMs:
    vm1,1,50
    vm2,4,20
    vm3,1,80
    and 2 hosts:
    host1,5,100
    host2,2,50

    I think all three can be placed, as shown below:-
    1. vm1 ON : place it on host2
      remaining resources are:-
      host1,5,100
      host2,1,0
    2. vm3 ON : place it on host 1
      remaining resources are:-
      host1,4,20
      host2,1,0
    3. vm2 ON : place it on host 1
      remaining resources are:-
      host1,0,0
      host2,1,0

    Isn't this right? What am I missing?
    I mean is there a rule that one host can only run one VM at a time?

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    • DeadCereal 10 years ago + 1 comment

      You are correct, however for Problem 1, VMotion is set to off. So Each VM will be placed into the first Host that can fit it. VM1 will go on host 1, VM 3 won't be able to find anywhere to fit so it won't be placed, then VM 2 will be placed on host 2. For the other 2 scenarios, VMotion is turned on, so the cluster should load balance and all VMs should be placed.

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      • kostadis 10 years ago + 1 comment

        DeadCereal you got it right!

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        • val 10 years ago + 1 comment

          Could author update Problem text so everything will be clear without reading all comments in Discussions? Thanks

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          • kostadis 10 years ago + 0 comments

            problem has beeen updated.

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