Hi!
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You can load both Linux and Windows VPSs on the same node with Xen.

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While this is possible..have you even taken a peek at how much licenses cost for that?

No way..too much $$$, IMHO.

I would caution the op about FluidVM and SolusVm. While I see both of these used in production..I have seen many problems in doing so..there are many things still not right with both of them.

Yes..there are few others..approach this with caution.

Bryon