I was wondering if someone could direct me to a resource or provide their own insights to differences between Xen and XCP. I have used Xen to go virtual on a majority of my infrastructure (Except for one NT 4 box) and was wondering if going with XCP would bring about any major benefits? For instance, from what I understand from what I have read, XCP allows you to create resource pools. The part of this I don''t understand is if one VM can spread across the entire pool or if it will still be tied to one piece of hardware in the pool (CPU and Memory as storage will be on a NAS / SAN anyways)? Thank you in advance. -- Shane D. Johnson IT Administrator Rasmussen Equipment _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users
Hi Shane, XCP questions are generally better asked on xen-api@ (bad list name, we are working to fix that). I''ve CC''d that list. On Wed, 2012-06-13 at 15:41 +0100, Shane Johnson wrote:> I was wondering if someone could direct me to a resource or provide > their own insights to differences between Xen and XCP. I have used > Xen to go virtual on a majority of my infrastructure (Except for one > NT 4 box) and was wondering if going with XCP would bring about any > major benefits?There is some content on the Wiki about this question. e.g. http://wiki.xen.org/wiki/Xen_Overview http://wiki.xen.org/wiki/Xen_or_XCP http://wiki.xen.org/wiki/Choice_of_Toolstacks> For instance, from what I understand from what I have read, XCP allows > you to create resource pools. The part of this I don''t understand is > if one VM can spread across the entire pool or if it will still be > tied to one piece of hardware in the pool (CPU and Memory as storage > will be on a NAS / SAN anyways)?If your storage is on NAS/SAN then yes, you can migrate virtual machines between homogeneous hosts in the pool, or even heterogeneous hosts (from the same vendor) if you configure "CPU levelling" appropriately. Ian.> > > Thank you in advance. > > > -- > Shane D. Johnson > IT Administrator > Rasmussen Equipment > > > >
On Wed, Jun 13, 2012 at 5:27 PM, Ian Campbell <Ian.Campbell@citrix.com> wrote:>> For instance, from what I understand from what I have read, XCP allows >> you to create resource pools. The part of this I don''t understand is >> if one VM can spread across the entire pool or if it will still be >> tied to one piece of hardware in the pool (CPU and Memory as storage >> will be on a NAS / SAN anyways)? > > If your storage is on NAS/SAN then yes, you can migrate virtual machines > between homogeneous hosts in the pool, or even heterogeneous hosts (from > the same vendor) if you configure "CPU levelling" appropriately. >They''ll still run on one host at a time though (I think Shane might be asking this) so they get the CPU and memory of (part of) one of the hosts. Like Ian says, you can easily move them between hosts in a pool though.
See - http://wiki.xen.org/wiki/Xen_/_XCP_/_XCP_on_Linux_Overview (very high level comparison) - http://wiki.xen.org/wiki/XCP/XenServer_Feature_Matrix - http://docs.vmd.citrix.com/XenServer/5.6.0fp1/1.0/en_gb/reference.html#hosts_and_pools (for XCP 1.0 & 1.1) - docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/reference.html#hosts_and_pools (for XCP 1.5) On 13/06/2012 15:41, Shane Johnson wrote:> I was wondering if someone could direct me to a resource or provide > their own insights to differences between Xen and XCP. I have used > Xen to go virtual on a majority of my infrastructure (Except for one > NT 4 box) and was wondering if going with XCP would bring about any > major benefits? > > For instance, f- rom what I understand from what I have read, XCP > allows you to create resource pools. The part of this I don''t > understand is if one VM can spread across the entire pool or if it > will still be tied to one piece of hardware in the pool (CPU and > Memory as storage will be on a NAS / SAN anyways)? > > Thank you in advance. > > -- > Shane D. Johnson > IT Administrator > Rasmussen Equipment > > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xen.org > http://lists.xen.org/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users