If you wish to stay within the official commercial ecosystem, look into the latest iterations of XenServer available through commercial licensing, which offer modern hybrid-cloud integrations and contemporary hardware compatibility.
: XenCenter 6.5 remains the primary tool for managing these hosts, though newer versions of XenCenter are often required for newer hypervisors. xenserver 65 iso download top
The management console is efficient and robust, supporting features like reading cache for VM acceleration. If you wish to stay within the official