What are the licensing concerns running Mac OS X guest OS on VMWare ESXi 5.5 with non-apple hardware? How do I install Mac OS X as a guest OS on VMWare ESXi 5.5 Update 1 running on non apple hardware?

We currently have a large deployment of HP server hardware running VMWare ESXi 5.5 Update 1. We have numerous Windows and Linux deployments in this environment and all works very well. Now we are in need of a virtual install of Mac OS X. We don't want to hack it in and we don't want to violate any EULA's, we just want virtual Mac OS X in our environment. Does this mean we need new hardware in the data center to support this?
You can't run OS X virtualized or not, on non-Apple-branded hardware per the software license agreement.  You would need Apple hardware to virtualize it and be compliant with the EULA.

Mavericks EULA