best Virtualization software for Sunfire v890 (UltraSPARC IV cpu)

[Suxipo]

Hi guys,

We have a Sunfire v890 server (32GB RAM, 4xUltraSPARC IV CPUs) doing nothing but collecting dust in our company. To take advantange of its high performance capability, we would like to run several servers on it through virtualization. Problem is I am only familiar with Sun VirtualBox and Vmware Workstation and none of them support SPARC processors (correct me if I am wrong). I've just become aware of Vmware ESXi and XenServer as greate alternative virtualization solutions. I thought, however, it's good idea to ask people here first about what is the best solution for this particular system.

Any input would be greately appreciated

Thanks,

Trung