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xen-users
Re: [Xen-users] Xen vs XCP
2011-04-26 07:34 keltezéssel, PFarthing írta:
Hi all, first post here. I've
been working with Vmware for a while and now I'm trying to
learn about Xen/XCP. I'm finding myself very confused between
the two. Haven't been able to find a product matrix. I know
that XCP uses Xen. But I cannot find anything regarding the
benefit of the one versus the other anywhere on the net or in
the mailing list archives. So, I was wondering if you guys can
enlighten me? Which is best for what? Why?
Also, I know both use a lot of
3rd party tools. So, if there is a preference for one product
over the other, can you also tell me what you use to manage
it?
Just to mention, cloud computing
is not something I'm interested in. That seems relegated to
people trying to provide/sell services. I'm looking
specifically at building highly available web farms and
databases using virtual tech. So far, no plans for building
out something that I would sell to others directly, no pushing
my vms up to Amazon, not reselling any VPS, etc.
thanks!
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Hi,
My memories of Vmware products are quite old, so I wouldn't compare
Xen or XCP to them, but the main difference between the two could be
outlined in the following:
Xen is a hypervisor (plus some related tools) depending on the
version more or less stable.
XCP is a complete solution (based on Xen (e.g. XCP 1.0 has Xen
hypervisor 3.4.2)) with a hypervisor kernel and all the tools (okay
most of them) bundled into the xe set of commands (even for network
and storage management).
Both approaches have their benefits and drawbacks, XCP offers a
relatively easy and fast start if you are willing/able to dedicate
(at least) one computer to try it. Xen can be installed onto the
distribution of your choice (it works even on NetBSD, and it had
been working on OpenSolaris as well (not anymore with recent
changes)), but you will need to do the resource management (like
network and storage) using the tools of that platform. My personal
reason of switching from Xen to XCP was not the tools which I had to
relearn, but the problem of not finding a suitable and stable kernel
for Dom0. Since the switch I had no stability problems (debian lenny
before , since then xcp 0.1, 0.5 and now 1.0).
XCP is not without its drawbacks as well for example there is no
libvirt support, there weren't fence/stonith agents for clusters
running atop (I've started writing one:
https://github.com/geza-gemes/Xen-Cloud-Platform-Xensever-stonith-fence-agent/)
etc.
Hope that helps making the right choice for your goals.
Regards
Geza
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