Apple Xserve (Early 2008) - Manual (Page 18)

18 Chapter 3 Monitoring the Xserve
System Identifier
Processor Activity
Indicator light Color Indicates
System identifier Yellow, alternating
between flashing and
off One of the following:
 The Xserve has detected an alarm condition. Open
Server Monitor for detailed information.
 The identifier light has been turned on manually
using Server Monitor.
Yellow flashing The identifier light has been turned on manually by
someone pressing the front or rear system identifier
button.
Front system identifier button/light
Rear system identifier button/light
Indicator light Color Indicates
System activity Blue intermittent Processor activity and load.
System activity lights