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Chapter 4. LED states
Use the combination of LED states on the appliance to diagnose problems.
Compute module LEDs
Compute module LEDs show faults and port activity.
The following figure shows the location of the LEDs on the compute module.
Table 2. SBB compute module LED descriptions
LED Description
ID LED Blue when the module is being identified.
Fault LED Amber when there is a fault in the controller.
OK LED Green when the controller is operating correctly.
Flashing green when there is an controller VPD error.
SAS Activity LEDs Steady green when there is a connection but no activity.
Flashing green when there is a connection and activity.
Ethernet status LEDs Right side:
v Steady green when link is active.
v Flashing green when there is network activity.
Left side – Network speed:
v Yellow: 1000Mb/s
v Green: 100Mb/s
v Off: 10Mb/s
POST LEDs Power On Self Test LEDs are used to show the boot progress of the x86
subsystem. If it fails to boot, the LEDs will show what stage of the process was
being performed when the problem occurred.
Figure 15. SBB compute module LEDs
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