4GB or RAM is installed but only 2 GB is usable.

Discussion in 'Windows Small Business Server' started by Wes Sothard, May 10, 2007.

  1. Wes Sothard

    Wes Sothard Guest

    I have just taken a new job and one of my new tasks is updating a server.
    Windows 2003 Small Business was installed. It was installed with 2 GB of
    memory installed. We have since had some application upgrades and wanted to
    move to using 4 GB of RAM. After installing the new 2 GB or RAM the server
    only shows 2 GB. Also, the server is not able to handle the new software.
    We are recieving error messages for memory allocation. Is there something
    that I have to do to expand the memory space to read the new memory? I
    thought it would be able to just auto-expand and be able to read/utilize the
    added memory. I guess I am wrong though. Any help would be great!

    Thanks all!
     
    Wes Sothard, May 10, 2007
    #1
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  2. Wes Sothard

    Rob C Guest

    Can the server hardware handle 4Gb?
    I have added more memory to a few SBS servers and it has worked without
    having to alter any settings.
     
    Rob C, May 10, 2007
    #2
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  3. If it's not PAE, check BIOS (both settings and to make sure it's current)
    and chipset drivers. There are a variety of causes for this, that seem
    generally to relate to that type of thing.

    If PAE is enabled, you'll be able to see it in CP-> System. The bottom line
    will say "Physical Address Extension." Don't use the /3GB switch on SBS.
     
    Dave Nickason [SBS MVP], May 10, 2007
    #3
  4. Wes Sothard

    Alan Nelson Guest

    Make sure the server BIOS knows its in there. If the BIOS can recognize it, I
    would think that the op system will as well.

    Alan Nelson
     
    Alan Nelson, May 10, 2007
    #4
  5. Wes Sothard

    Wes Sothard Guest

    All specs for the equipment state that it is able to handle up to 4 GB of
    RAM. I will verify BIOS setting tomorrow. It is a primary server, so for
    something like this, shutting it down right away is not always an option.

    Thanks for all the prompt as well as expediant aid! I will use your
    assistance and see if I can manage to get the server working properly.

    Wes S.
     
    Wes Sothard, May 11, 2007
    #5
  6. Hi Wes,

    I recently bought an AMD64 server, and the max memory depends upon what
    kind of RAM you install. More precisely, if I use DDR-400 the max RAM
    is 64GB, but if I use DDR-667 RAM, the maximum is less -- I think it's
    32GB RAM if I remember right.

    Anyway, I just wanted to let you know that the type of installed RAM may
    be the cause of your 2GB limit.

    -- Steve M
     
    Steve Moffett, May 11, 2007
    #6
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