Figure 53 Sas 12Gb Expansion Module Fault Leds - Seagate Exos X 4006 Series Hardware Installation And Maintenance Manual

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 prior LED fault conditions occur simultaneously, it is a clear indication of component failure.
Expansion module fault LEDs
The expansion module has several 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.
LED
Power cooling module fault LEDs
The 764W power cooling module (PCM) has 6 LEDs to identify various states: 4 as primary thermal and power status
indicators and another 2 that used to indicate battery status, but are no longer used. When no LEDs are on, there is no AC
power to the PCM. The asterisk (*) indicates a fault condition.
77 Chapter 9 Hardware installation and configuration issues
Type Color
Module fault Amber
SAS expansion port Amber

Figure 53 SAS 12Gb expansion module fault LEDs

С
State Status
On Drive link is down
On* Expansion enclosure hardware fault
Fast flash (1s on, 1s off) Unit identification (UID) bit is set
Slow flash* (3s on, 1s off) Expansion enclosure degraded or offline
Expansion enclosure functioning properly
Off
Expansion enclosure not present
On* Critical SAS cable fault
Fast flash (1s on, 1s off) SAS unit identification (UID) active
Slow flash* (3s on, 1s off) Non-critical SAS cable fault
Off SAS expansion port functioning properly