virtual machine unable to start

Posted on 2009-12-23
Last Modified: 2013-11-06
Good day Experts
i have a Dell r610 server with 20 Gb of ram 2 x  e5520 processors running server 2008 standard editon 64 bit .
however  my virtual machines  are currently consuming 8.93 GB of ram and i am recieving an error when trying to start up addotional machine please see attached screenshot JPEG

how do i resolve this problem to make use of the rest of the ram ?

Question by:redisolutions
    LVL 74

    Expert Comment

    by:Glen Knight
    According to your screenshot you only have 466MB of free
    memory so this is the problem.

    Open task manager and find out what is using all the memory by looking at the processes tab.

    Author Comment

    i checked the processes  nothing heavy is running please see attached

    LVL 74

    Expert Comment

    by:Glen Knight
    What other vm's have you got running?
    LVL 3

    Expert Comment

    hello ,
    have you checked your DIsk free space ? because hyper-V use the same size as your virtual machine memory to allocate it on the disk space .
    If your server have not enought disk space , other vm are unable to start .
    LVL 5

    Accepted Solution

    Odd that System shows you have 20 gig but Task Manager show 16

    I just checked my servers and they show the same on both.

    Anyway, you have to consider what you have allocated to each VM as this is the amount of memeory Hyper-V sees. If you have 5 server allocated 2 gig each, they will show 10 Gig total. Even though they are actually maybe using 5 gig, Hyper-V doesn't care, it is what you have allocated. Don't forget to add .5 gig for the host by default.

    Reduce the amount of RAM allocated to the VM's that don't need it. I see nearly 100% over allocation. Meaning you've have 16 or 20 gig but are only using 9. Do check into the difference


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