Monitoring the DS14 power supply

LEDs on the DS14 power supply

The DS14 power supply has four LEDs. The LEDs indicate whether the power supply or the integrated fan module is functioning normally or there are problems with the hardware. You can also identify any hardware failure associated with the power supplies from the error messages displayed on your storage appliance console.

Location of LEDs

Each power supply, which contains two LEDs, is encased in a device carrier and housed at the rear of the disk shelf. The following illustration shows the location of the power supply LEDs.

Interpreting power supply LEDs

The following table describes how to interpret the power supply LEDs.

Fault condition	Description	LEDs				Alarm
Fault condition	Description	Power	AC	Fan	Fault	Alarm
N	Normal operation	Green on	Amber off	Amber off	Amber off	None
1	Power supply failure	Green off	Amber off	Amber off	Amber on	1 sec. beep
2	Fan failure	Green off	Amber off	Amber on	Amber off	1 sec. beep
3	No power to PSU	Green off	Amber on	Amber off	Amber on	1 sec. beep

Power supply console error messages

The following error messages appear on your storage appliance console if an SES element on the power supply fails. For information about replacing the power supply, see Replacing a power supply in a disk shelf.

Error message	Action required
Power supply Element 1: failed	The power supply unit on the left at the back of the disk shelf failed. Contact Network Appliance customer service to replace the power supply.
Power supply Element 2: failed	The power supply unit on the right at the back of the disk shelf failed. Contact Network Appliance customer service to replace the power supply.
Cooling element Element 1: failed	The integrated fan module in the power supply unit on the left at the back of the disk shelf failed. Contact Network Appliance customer service to replace the power supply.
Cooling element Element 2: failed	The integrated fan module in the power supply unit on the right at the back of the disk shelf failed. Contact Network Appliance customer service to replace the power supply.