Apple Xserve (Early 2008) - Manual (Page 17)

Chapter 3 Monitoring the Xserve 17
Interpreting the Xserve Status Lights
You can check the overall status of the Xserve and the status of some components
such as drive modules, network interfaces, and power supplies, just by glancing at the
indicator lights on the Xserve.
Overall Xserve Status
Indicator light Color Indicates
On/standby
(front panel) White The Xserve is turned on.
White pulsing The Xserve is in sleep.
Enclosure lock Yellow The lock is engaged.
When the enclosure is locked (the light is on), the
Xserve might not recognize a keyboard, mouse, or
hot-pluggable storage device, depending on a
security preference. For information, see “Controlling a
Keyboard and Mouse” on page 21.
On/standby button and light Enclosure lock light