Setup and Administration
Is your computer up-to-date?
To use Lion Server, make sure you have the following:
Mac desktop or server with Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processorFind out if your current Mac has one of these processors by clicking the Apple icon at the top left of your screen, then choosing About This Mac.
Latest version of Snow LeopardGet up to date with the latest version of OS X Snow Leopard to purchase OS X Lion from the Mac App Store. If you have Snow Leopard, click the Apple icon and choose Software Update to install version 10.6.8.
10GB of available disk space
2GB of RAM
If your computer does not meet these requirements, you will need to upgrade your computer before using Lion.