We ran a test with this: APC BR1500LCD 1500VA 865 Watts 8 Outlets BACK-UPS RS (No Longer Sold on NewEgg)

Mini server + 2 x 8 Port Gigabit Switches + Comcast Router + Security System

  • Run: 170 minutes
  • Load: 26w
  • Load: 3%

Add in One Xserve Power Cable

  • Run: 30 minutes
  • Load: 160w
  • Load: 20%

Add in Both Xserve Power Cables

  • Run: 15 minutes
  • Load: 280w
  • Load: 33%