Chapter 3: System Interface
zPower: Indicates power is being supplied to the system's power supply units. This LED should normally be illuminated when the system is operating.
3-4 SCSI Drive Carrier LEDs
Each SCSI drive carrier has two LEDs.
zGreen: When illuminated, the green LED on the front of a SCSI drive carrier indicates drive activity. A connection to the SCSI SCA backplane enables this LED to blink on and off when that particular drive is being accessed.
zRed: A