Virtualisation benefits from VirtualBox & ZFS
Hi,
If you run your VirtualBox on OpenSolaris/Solaris with ZFS and deduplication enabled then running multiple instances of Windows requires less disk space. No special software needs to be purchased :). A situation that does necessarily apply to the other OSes. VirtualBox v3.1.2 also supports upto 32 cpus per Virtual Machine, which the others do not.