Power Fail; Sas/Sata Drive Carrier Led - Supermicro 7044H-32R User Manual

Power Fail: Indicates a power supply module has failed. This should be
accompanied by an audible alarm. A backup power supply module will take the
load and keep the system running but the failed module will need to be replaced.
Refer to Chapter 6 for details on replacing the power supply. This LED should be
off when the system is operating normally.
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SAS/SATA Drive Carrier LED

Each SAS/SATA drive carrier has a green LED. When illuminated, this green
LED (on the front of the drive carrier) indicates drive activity. A connection to the
Serial ATA backplane enables this LED to blink on and off when that particular
drive is being accessed.
Note: The second LED on the SAS/SATA carriers is not used.
Chapter 3: System Interface
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