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On Sunday 01 July 2007 11:58, Joseph Mack NA3T wrote:
> On Fri, 29 Jun 2007, Rio wrote:
>
> > also please check out linux-vserver
> >
> > http://linux-vserver.org/Welcome_to_Linux-VServer.org
> >
> > we have been running it for a year now with absolutely no hiccups
whatsoever
> > and no excessive loading! we have 84 virtual servers on 1 machine and 40
on
> > another machine and i am configuring a third host as i write this. my
> > estimates are that the 2 existing machines could easily handle 100 virtual
> > servers each. the virtuals can be mostly any linux distro mix though the
most
> > popular are gentoo, debian, redhat, centos and ubuntu.
>
> Trying to find out why people use virtual servers for
> realservers
>
> One person here (forget who) said that it was cheaper to
> have one big server than to have the same server capacity in
> single machines.
>
forgot to answer this one :) it is exceedingly more expensive to run 84 pieces
of hardware in multiple racks. electricity costs, physical storage space
costs, hardware costs, environmental conditioning costs, etc.
it is FAR cheaper to run a few hosts running virtuals than to run real
hardware. the more hardware you run the more you increase your chances of a
hardware failure. although possibly measurable, we have absolutely no
noticable difference in efficiency of services between virtuals and real
hardware.
> The next question then is why don't you have the big server
> which is currently split into 84 realservers as just one big
> realserver? If you need failover (do virtual servers fail?)
> why not just 5 machines (enough that you'll only loose 20%
> on failure)?
>
> Thanks Joe
>
>
> --
> Joseph Mack NA3T EME(B,D), FM05lw North Carolina
> jmack (at) wm7d (dot) net - azimuthal equidistant map
> generator at http://www.wm7d.net/azproj.shtml
> Homepage http://www.austintek.com/ It's GNU/Linux!
>
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>
--
Rio
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