> Subject: Re: [Xen-users] Automatic Loadbalancing via migration --live

[Paul Archer <parcher@xxxxxxx>]

> > You need to have some sort of tool that figures out when and where to
> > move the guest, and that tool will use "xm migrate -live some-domain
> > some-host". 
>
> let me tell you, what i mean. On Februar i had a  course on Vmware ESX
> and i was very impressed how smooth let the system move the VMs via
> VMotion to systems with a low load to balance the power on the network.
> You have several options to choose, when Vmware let switch the hosts.
> Vmware assign stars, from one, to five. If one VM hast nothing to to, it
> has only one star, but if the load is higher and you get 3-5 stars, than
> Vmware decide to move the VM to a better Host.
> You have the choice, if Vmware does the VMotion automatically, or let
> the admin do this.
>
> My hope was, that Xen can this too, but it seems, that i have to do a
> lot, to get this feature under Xen.
>
> My testing system reside on a software ISCSI so all VMS can migrate all
> ready without any problems :-)
>
> The next step would be to monitoring Xen and the hosts. Most software i
> saw are not enough professional enough or need a specialist for
> something like nagios. But, Xen is young so, i have to be patient ;-)
While this list is primarily for "raw" Xen, I think it's probably OK to 
mention Virtual Iron (www.virtualiron.com). They offer a Xen-based 
solution with live migration and load balancing for about $500/CPU. Since 
you're looking at VMware ESX, I'm guessing it's the price, more than the 
fact you have to pay, that's keeping you away.
Virtual Iron has its warts, and it only works with HVM, but it'll do what 
you want.
Paul

PS I don't work for them. I just evaluated their product (along with ESX 
and OpenVZ/Virtuozzo) recently.
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