Figure 59 Controller Module Fault Leds - Seagate Exos X 4006 Series Hardware Installation And Maintenance Manual

Controller module fault LEDs
The controller module (CM) has a number of ports, some with independent status LEDs. The illustration below is of the SAS
four-port version of the CM. The amber LEDs listed below are the only ones that provide fault condition status. The asterisk (*)
indicates a fault condition.
LED Type
SAS expansion port Amber
Hardware fault
OK to remove
Consult your solution service documentation for details on how to minimize system disruption during service replacement of a
controller module. Fault conditions include the following:
Logs or events indicate a fault condition for the CM.
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The Hardware fault LED on the CM is steady or flashing amber.
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The Hardware fault LED for the SAS expansion port on the CM is steady or flashing amber.
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The Hardware fault LED for one of the four SAS 12Gb ports on the CM is steady or flashing amber.
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The Module fault LED on the storage enclosure ops panel is steady amber.
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Troubleshooting indicates a problem with the CM. When you are isolating connectivity or drive module fault conditions,
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stop the data flow to the affected disk groups from all hosts as a data protection precaution and perform a backup of your
data.
When all of the prior LED fault conditions occur simultaneously, it is a clear indication of component failure.
Expansion module fault LEDs
The expansion module has a number of ports, some with independent status LEDs. The amber LEDs listed below are the only
ones that provide fault condition status. The asterisk (*) indicates a fault condition.
= SAS 4-port
12Gb/s
Color State
On*
Fast flash* (1s on, 1s off) SAS unit identification (UID) active
Slow flash* (3s on, 1s off) Non-critical SAS cable fault
Off
On*
Amber Fast flash (1s on, 1s off)
Off
On
White
Off

Figure 59 Controller module fault LEDs

Status
Critical SAS cable fault
SAS expansion port functioning properly
CM hardware fault
Part of sequence as CM comes online
CM functioning properly
Ready for removal, the cache is clear
Do not remove the CM, cache still contains unwritten data
Chapter 9 Hardware installation and configuration issues
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