Poll: Which is better to run VMWare Server on

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General Chat Thread, Which is better.......... in General; Originally Posted by PiqueABoo This means that even if you have more that 2Gb RAM you need to.. Ermm.. no. ...
  1. #16
    ajbritton's Avatar
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    Re: Which is better..........

    Quote Originally Posted by PiqueABoo
    This means that even if you have more that 2Gb RAM you need to..
    Ermm.. no.

    For instance VMWare have long said you can make a 3.6GB VMWare guest on a 4GB box without the /3GB switch (because it doesn't map a VMs memory into user address space).
    That's interesting. You wouldn't have a link would you?

  2. #17

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    Re: Which is better..........

    Quote Originally Posted by ajbritton
    Quote Originally Posted by PiqueABoo
    This means that even if you have more that 2Gb RAM you need to..
    Ermm.. no.

    For instance VMWare have long said you can make a 3.6GB VMWare guest on a 4GB box without the /3GB switch (because it doesn't map a VMs memory into user address space).
    That's interesting. You wouldn't have a link would you?
    As I said previously, you can use PAE to get round this limit. Giving guest's access to 16Gb of ram.

  3. #18
    contink's Avatar
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    Re: Which is better..........

    Useful info...

    I've started playing with VM a bit more lately and I'm reaching the point where I'm tempted but nervous about using the convertor to capture my existing Win2k3 to a guestOS and then wiping it all and starting over with an Ubuntu server as the base.

    Still not sure about whether to open a seperate guest OS to the dmz but we'll see.



    Anyway, back on topic... which flavour of nix' would anyone recommend for a vmware server base.. bearing in mind that security would be the priority and no, not interested in a GUI. Thoughts?

  4. #19

    Geoff's Avatar
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    Re: Which is better..........

    I'm using a server install of Ubuntu 8.08 Gutsy Gibbon (purely because 6.06 doesn't work properly with my RAID card).

  5. #20

    webman's Avatar
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    Re: Which is better..........

    Quote Originally Posted by Geoff
    I'm using a server install of Ubuntu 8.08 Gutsy Gibbon
    August 2008 release of Ubuntu, Geoff? 8)

  6. #21

    Geoff's Avatar
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    Re: Which is better..........

    Getting ahead of myself. I meant 7.10 of course

    https://wiki.ubuntu.com/GutsyGibbon
    https://wiki.ubuntu.com/GutsyReleaseSchedule

    I installed from the Tribe 5 installation CD.

  7. #22

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    Re: Which is better..........

    You wouldn't have a link would you?
    Errm... no, but I'm not making it up.. although my comment on this was too throwaway and a bit crap...

    I think VMWare uses AWE. That allows a process to allocate lots of nonpaged physical memory to put things in. To access that physical memory you need to write code to map it into into your 32-bit virtual address space. With that bit of d-i-y memory management you can use more physical memory than will fit in virtual memory. Don't know what the overheads are like generally or in any given implementation, but note you avoid some that normal userland virtual memory has (e.g. pages on disk).

    Certainly when I read about VMWare using AWE wherever it was a few years ago (probably their forums) they didn't suggest you used the /3GB switch... so I just assumed that adding another GB of virtual address space makes no difference to their memory management.

  8. #23
    ajbritton's Avatar
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    Re: Which is better..........

    AWE sounds a bit like EMS if anyone remembers that!

  9. #24

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    Re: Which is better..........

    Address Windowing Extensions (AWE) are a Windows specific API that uses PAE (thus the machine must support PAE). They are not available to *nix hosts. *nix machines use PAE directly.

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