So the database backend runs on Mac OS X, Linux and Windows.
Apple should definitely release these for private clouds.
One of the following 64-bit operating systems:
A supported Linux distribution:
Ubuntu 12.04 or later (but see Platform Issues for Ubuntu 12.x)
Or, an unsupported Linux distribution with:
Kernel version between 2.6.33 and 3.0.x (inclusive) or 3.7 or greater
Works with .deb or .rpm...