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Windows Thread, Windows Server 2008 in Technical; Surely Windows must still think that the kernel has run out of mapped memory it's a limit of 32-bit memory ...
  1. #46
    cookie_monster's Avatar
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    Re: Windows Server 2008

    Surely Windows must still think that the kernel has run out of mapped memory it's a limit of 32-bit memory addressing.

  2. #47

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    Re: Windows Server 2008

    Quote Originally Posted by cookie_monster
    Surely Windows must still think that the kernel has run out of mapped memory it's a limit of 32-bit memory addressing.
    It still has an effect on the VMs its just that the with 64bit CPUs ESX server runs 64bit and then allocates memory to each VM. Each individual VM still has the same limitations that it would have on a real machine. For 32bit windows this works out to be about a 3.6GB top out depending on the hardware involved as the HW grabs some of the memory space for DMA.

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    Re: Windows Server 2008

    Ah that's what i thought.

  4. #49
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    Re: Windows Server 2008

    Quote Originally Posted by SYNACK
    Quote Originally Posted by cookie_monster
    Surely Windows must still think that the kernel has run out of mapped memory it's a limit of 32-bit memory addressing.
    It still has an effect on the VMs its just that the with 64bit CPUs ESX server runs 64bit and then allocates memory to each VM. Each individual VM still has the same limitations that it would have on a real machine. For 32bit windows this works out to be about a 3.6GB top out depending on the hardware involved as the HW grabs some of the memory space for DMA.
    so how does using esx server remove the 32bit memory limits of the 32bit guest OS if the same restrictions still apply ?

    Are you saying that you can allocate the extended memory available to the hypervisor out to many 32bit guests therefore reducing server sprawl
    but not actually alter the maximum amount of memory each instance of 32bit windows server can use.

    This is great for consolidation but presumably things like sql and exchange are still better off on their own box.

    Not trying to be clever, just trying to understand what esx server changes.

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    Re: Windows Server 2008

    Larger implementations are usually handled by VMWare ESX server
    Making them virtual suggests you are, but I'm not entirely sure if you're agreeing with my conjecture i.e. that you'll typically need to scale out to two Standard 4GB TS machines (as opposed to scaling up to one Enterprise 8GB TS machine).

  6. #51

    SYNACK's Avatar
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    Re: Windows Server 2008

    ESX is just a base platform and it does not change any predetermined limits that are imposed by the guest OS. If you can't use a 64bit TS server OS to remove the limit you will still have to use two separate virtual machines to use up the 8GB of RAM.

    All that ESX changes is that you can use virtualisation without the overhead of liscencing and hardware usage of using a host OS. Also with the crazy expensive high avalibility management pack you can have the virtual machines dynamically allocated across multiple servers depending on resource usage and server avalibility. For example if a server falls over it will reallocate the VMs that were on that server over to another one.

  7. #52
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    Re: Windows Server 2008

    Are you serious about the Universe and Globalsoft editions ? Or are you just highlighting the stupidity of Microsoft.
    Not sure but it may be a reference to Globalsoft as featured in We Will Rock You :rock:

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    Re: Windows Server 2008

    If you can't use a 64bit TS server OS to remove the limit
    I thought 32-bit apps generally use significantly more memory when running on 64-bit OS which undermines a fair bit of the case for moving to a 64-bit TS for more memory.

    Obviously a different story where both OS and some big app are 64-bit, most the apps a TS user is likely to be running are 64-bit etc.

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    I attended the Optimise IT conference yesterday at the Diamond Centre in Rushden and Microsoft were very keen to push all the features. The actual release was said to be "within the next 180 days" straight from a Microsoft mouth.
    I was very impressed and shall be messing about with the RC a hell of a lot over the next few weeks
    Last edited by apoth0r; 6th February 2008 at 11:35 AM.

  10. #55

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    Running the full final version on a box myself now and very pleased, just need HP to release the drivers for the Proliants we have and fingers crossed, but very smooth install and very happy. The reason I have the final thing 20 days before launch is ive been on the closed Beta so have access to the RTM ISO file and can download and run that, hence I have done and am using it.

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    Hello,

    In fact if you are a technet subscriber you can download the full version for both 32 and 64 bit editions right now - like I've done.

    Also I've noticed typing in Winver reports that's Windows 2008 Server with Service Pack 1 installed!

    Rob

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    Thats because 2008 server is at SP1 as it shares the same code base and kernel as Vista SP1, it's the first time that the client and server have been aligned since the 2000 code.



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