IBM Power System S821LC Installing page 100

v The network activity LEDs (3) and (4) flash when there is network activity on the feature EKA6 four
port network card.
Figure 51. LEDs on the front of the system
LEDs are also located on the rear of the system; see Figure 52.
The identify LED is at (2). Turn it on by using a system identify command or by pressing the UID button.
Figure 52. LEDs on the rear of the system
Drive LEDs can indicate the following states:
v Blue activity LED can indicate the following states:
– When there is no activity, the LED is off for SATA drives; on for SAS drives.
– Flashing blue indicates activity
v Red status LED can indicate the following states. The status LED does not work when SATA drives are
directly attached to the system backplane.
– Steady red indicates that the drive failed
– Flashing red at 4 Hz identifies the drive
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Power Systems: Installing the IBM Power System S821LC (8001-12C)