IT VirtualisationPlease Evaluation of these servers and give the details of prod

IT VirtualisationPlease Evaluation of these servers and give the details of products and benefits. (Note Product details is very important)(1) proxmox server.with benefit and product details(12) Xen Serverwith benefit and product details(3) Citrix serverwith benefit and product details(4) OpenVZwith benefit and product details