[CentOS] Server Virtualization

umair shakil umairshakeel at gmail.com
Tue Sep 18 03:53:05 UTC 2007


Dear,

Yes, VMware is the product which is basically in the market. I have
installed and use once i mean
about 2 years back.

Well, through my research, VMware is only good if your are in a "Tesing
Environment". It
is not recommended in the production environment. Because of following
reasons,

It uses Kernel Resources upto high and u need very High End Server
IF u are using 3 etc applications like (DNS, WEB, FTP), if the machine goes
down all
your three application goes down
High Demanding of memory

Regards,

Umair Shakil
ETD


On 9/18/07, Ross S. W. Walker <rwalker at medallion.com> wrote:
>
> Clint Dilks wrote:
> >
> > Hello,
> >
> > I work for a school in a New Zealand university and we are wanting to
> > implement Server Virtualization for both CentOS and Windows
> > systems.  So
> > I thought I would ask here what experience people have had
> > with this and
> > what issues that you all think should be considered?
>
> Irrespective of which virtual server solution you choose be aware that
> virtualization brings with it steep storage requirements. Think of
> providing around 1TB of RAID10 storage for 20 guests. VMs do lots of
> tiny random IOs so for 20 guests split between 2 servers I provide
> 500GB of RAID10 to each via iSCSI SAN.
>
> >  From my own research it seems that VMWare or Xen are really the two
> > major products to be considered, are there any others I should be
> > considering ?
>
> Not really.
>
> > Is anyone running Linux "Guest" O/S's inside a Windows host
> > ??  And if
> > so can you share your reasons for this?
>
> I do at work so I can prototype some Linux stuff on my Windows box.
>
> > Anyway thank you for your time and any experiences /
> > knowledge you are
> > willing to share :)
>
> I would try both VMware server and Xen on CentOS, if you have 2 servers
> set them up side by side and plugged into your storage SAN. Run them
> through their paces, do some benchmarks get a feel for ease of use and
> maintenance.
>
> When your ready and have a budget you can move up to the commercial
> versions, ESX and Xen Enterprise.
>
> -Ross
>
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