Windows Vista Forums

Maximum Memory that can be allocated to Virtual pc vms

  1. #1


    JoF Guest

    Maximum Memory that can be allocated to Virtual pc vms

    Hi,

    We are using virtual pc vms for software development (Vista as host with
    Virtual PC 2007 installed). We would like to maximize allocation of memory
    to virtual pc vms but the total memory that we can allocate so far is only
    up to 3.5GB. We already tried to upgrade the machine to 8GB using Vista 64
    bit but still no luck.

    We installed Vista 64bit on 8GB memory machine, it can see total of usable
    8GB memory but we can only allocate total of 3.5GB to virtual pc vms.

    I know that we can only allocate maximum of 3.7GB PER VM as stated in
    technet. But I cannot see any documentation that tells about the total
    memory that can be allocated to virtual pc vms. Do you have any idea where
    can I get such information?

    Or can you suggest how we can maximize allocation of memory to virtual
    machines? Say if I have 8gb memory on Vista 64 bit OS, I should be able to
    use 6GB total to vms of virtual pc.

    Any help that you can give will be highly appreciated.

    Regards,
    JoF


      My System SpecsSystem Spec

  2. #2


    Steve Jain [MVP] Guest

    Re: Maximum Memory that can be allocated to Virtual pc vms

    On Tue, 21 Oct 2008 10:57:52 +0800, "JoF" <jof@xxxxxx> wrote:

    >Hi,
    >
    >We are using virtual pc vms for software development (Vista as host with
    >Virtual PC 2007 installed). We would like to maximize allocation of memory
    >to virtual pc vms but the total memory that we can allocate so far is only
    >up to 3.5GB. We already tried to upgrade the machine to 8GB using Vista 64
    >bit but still no luck.
    >
    >We installed Vista 64bit on 8GB memory machine, it can see total of usable
    >8GB memory but we can only allocate total of 3.5GB to virtual pc vms.
    >
    >I know that we can only allocate maximum of 3.7GB PER VM as stated in
    >technet. But I cannot see any documentation that tells about the total
    >memory that can be allocated to virtual pc vms. Do you have any idea where
    >can I get such information?
    >
    >Or can you suggest how we can maximize allocation of memory to virtual
    >machines? Say if I have 8gb memory on Vista 64 bit OS, I should be able to
    >use 6GB total to vms of virtual pc.
    >
    >Any help that you can give will be highly appreciated.
    >
    >Regards,
    >JoF
    It should work. I have several 8GB machines and can run two 2 or 3GB
    VMs concurrently.
    Are you receiving an error message?
    Do you have anything like Nero installed?

    --
    Cheers,
    Steve Jain, Virtual Machine MVP
    http://vpc.essjae.com/

      My System SpecsSystem Spec

  3. #3


    C.Joseph Drayton Guest

    Re: Maximum Memory that can be allocated to Virtual pc vms

    JoF wrote:

    > Hi,
    >
    > We are using virtual pc vms for software development (Vista as host with
    > Virtual PC 2007 installed). We would like to maximize allocation of memory
    > to virtual pc vms but the total memory that we can allocate so far is only
    > up to 3.5GB. We already tried to upgrade the machine to 8GB using Vista 64
    > bit but still no luck.
    >
    > We installed Vista 64bit on 8GB memory machine, it can see total of usable
    > 8GB memory but we can only allocate total of 3.5GB to virtual pc vms.
    >
    > I know that we can only allocate maximum of 3.7GB PER VM as stated in
    > technet. But I cannot see any documentation that tells about the total
    > memory that can be allocated to virtual pc vms. Do you have any idea where
    > can I get such information?
    >
    > Or can you suggest how we can maximize allocation of memory to virtual
    > machines? Say if I have 8gb memory on Vista 64 bit OS, I should be able to
    > use 6GB total to vms of virtual pc.
    >
    > Any help that you can give will be highly appreciated.
    >
    > Regards,
    > JoF
    >
    Hi JoF,

    If the GuestVM is WindowsXP (32b versions), then even if you
    could allocate more than 3.4GB, you would run into the
    WindowsXP limit of 3.4GB.

    Sincerely,
    C.Joseph Drayton, Ph.D. AS&T

    CSD Computer Services

    Web site: http://csdcs.itgo.com/
    E-mail: cjoseph@xxxxxx

      My System SpecsSystem Spec

Maximum Memory that can be allocated to Virtual pc vms

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