The release of vSphere 5 introduces support for Apple's Mac OS X Server operating system on ESXi 5.0, with the following support considerations:
- To run Mac OS X in a virtual machine, ESXi must be running on Apple branded hardware.
- ESXi 5.0 introduces hardware support for Apple's Xserver 3,1 server.
- Supported versions include Snow Leopard 10.6 through update 10.6.8 with supplemental update v1.1.
- Installation instruction for Mac OS X 10.6 can be found here http://partnerweb.vmware.com/GOSIG/MacOSX_10_6.html
For more information about software and hardware support, please check the VMware Compatibility Guide