On Fri, 29 Apr 2005, Gil Freund wrote:

> On 29 Apr 2005 10:38:31 +0000, Oleg Goldshmidt <[EMAIL PROTECTED]> wrote:
> > Muli Ben-Yehuda <[EMAIL PROTECTED]> writes:
> >
> > > What is GSX's architecture?
> >
> > GSX Server runs as an application in the host OS, ESX runs on baare
> > metal.
>
> Not quite. ESX uses a highly customized RedHat distribution.

perhaps you didn't dig into the thing - it uses the linux system as a
console OS, not as a host OS. the guest machines do not run on top of this
linux system at all. all the device drivers that are useable by the guest
machines were modified - if you compile and load a normal driver, it will
be accessible by the linux console machine, but it cannot be accessed by
the guest machines.

> While
> highly optimized, it is still a Linux distribution (such as IPcop or
> Sbox, as opposed to Network Appliance's OS)
> The ESX application is has several functional diffarences from the GSX
> application
> 64 CPUs (as apposed to 8 or 16 on GSX)
> vMotion (moving VMs between hosts on the fly, Xen also has this capability)
> Memory over-committing (allowing to set more memory to Guests then if
> physically available)
>
> All of this does not ESX would or should provide better performance or
> stability then GSX, in the same sense that NetApp provides better
> network storage then a vanilla NFS/SAMBA machine would.

but contrariwise, ESX is supposed to give better performance for the guest
machines - please check your claims before spreading this info...

note: i didn't deal with GSX other then reading about it. i did, however,
had the "pleasure" of trying to disect ESX for some purpose, and was quite
surprised to find how it works.

-- 
guy

"For world domination - press 1,
 or dial 0, and please hold, for the creator." -- nob o. dy

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