Apple Server Diagnostics tests your server for hardware issues. Apple Server Diagnostics version 3X109 is compatible with Lion server on the Mac Pro (Mid 2010) with Mac OS X Server  and Mac mini Server (Mid 2011).

Apple Server Diagnostics (AXD) runs a customizable set of tests to help you diagnose issues with server components including:

• Boot ROM
• Ethernet controller
• Fan
• Hard drive
• Memory
• Power supply
• Processor
• Sensor
• Video controller

You can run AXD in Extensible Firmware Interface (EFI), which is referred to as AXD EFI tools, or in Mac OS X or Mac OS X Server.