Re: Debian and OSS vs vSphere
On 29/02/12 08:02, Davide Mirtillo wrote:
How should i consider technologies like KVM and openVZ regarding
stability? I'm talking about downtimes and maintenance time. I heard
multiple opinions on xen being a bad thing to work with, both
performance wise and stability wise. I wouldn't want to set this
"private cloud" up only to discover it's not production ready!
My advice would be to stick to technologies which are widely deployed
and supported, so ideally things that are in the mainline Kernel, or
are explicitly supported by a commercial distro, e.g. Red Hat.
That rules in KVM but rules out OpenVZ.
There is an argument that virtualisation technologies (Xen, KVM) are
more heavyweight than container technologies (linux vserver, OpenVZ,
lxc). However in my experience and especially with modern hardware,
this is rarely an issue: for example I run ~100 KVM VMs on top of 5 year
old hosts. I'd suggest going for a virtualisation technology,
and I'd suggest KVM - unless your management software layer (proxmox
or whatever) dictates another e.g. Xen in which case the management
layer is a more important decision.
--
Jon Dowland
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