[aklug] Re: Dedicated Virtualization

On 12/08/2010 10:03 AM, Christopher Howard wrote:
> Hey guys, at work I managed to get hold of one (pretty nice) spare PC, and I want it to be dedicated to just running VMs. The VMs will be mainly be used for testing purposes (e.g., experimenting with software/networking configurations).
>
> I was wondering if I should go with what I know (Qemu built on a Linux base) or if I should try out this "Xen" thing. Whatsay?
>
>
Xen is good, but the last time I used it (~1 year ago) 'fixing' VMs that
were broken was terribly difficult. The downside of Xen that I see:
When you allocate RAM to a VM, it is 'taken' from the host OS, and
reserved. (VMWare doesn't do that; at least, ESX doesn't.) (Yes, I
know that oversubscribing is bad.) I haven't followed too closely with
what RHEL is using to replace Xen, but it'd be a good idea to look into
it's replacement.

VMWare is another good one to try, since it'll more likely apply to any
future positions you might hold ( depending on what you are planning on
getting into, job-wise). I don't know of any large companies that use
Qemu for virtualization (in production), but I know quite a few that use
VMware. Getting your feet wet with VMWare would be good in any event.

-- 
Adam
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