Monitoring the DS14 LRCs

About monitoring the DS14 LRCs

The DS14 LRC has three LEDs. The LEDs indicate whether the LRC is functioning normally or there any problems with the hardware. You can also identify any hardware failure associated with the LRCs from the error messages displayed on your storage appliance console.

Location of LRC module LEDs

The LRCs are located in the middle of the back of the disk shelf. The LRC module contains three LEDs.

The following illustration shows the location of the LEDs for an LRC with copper interfaces.

Note
The Fault LED is amber. The other two LEDs are green. See Interpreting LRC module LEDs for an illustrated explanation of how the LEDs function.

The following illustration shows the location of the LEDs for an LRC with an optical input interface and copper output interface.

Note
Because LRC B on the DS14 is inverted, the location of the LRC B LEDs is the inverse of what is shown in the preceding illustrations.

Interpreting LRC module LEDs

The following table describes how to interpret the LRC module LEDs.

Fault condition	Description	LEDs			Alarm
Fault condition	Description	In port	Out port	Fault	Alarm
N	Normal operation	Green on	Green on	Amber off	None
1	ESI/LRC failure	Green on or off	Green on or off	Amber on	1 sec. beep
2	No signal on Input port	Green off	Green on	Amber off	None
3	No signal on Output port	Green on	Green off	Amber off	None
4	Invalid termination	Green on or off	Green flashing	Amber off	None

LRC console error messages

The following error messages appear on your storage appliance console if an SES element on the LRC fails. For information about replacing the LRC, see Replacing an LRC.

Error message	Action required
Temperature sensor Element 2: failed	The temperature sensor on LRC module A on the top back of the disk shelf failed. Contact Network Appliance customer service to replace the LRC.
Temperature sensor Element 3: failed	The temperature sensor on LRC module B on the bottom back of the disk shelf failed. Contact Network Appliance customer service to replace the LRC.
SES electronics Element 1: failed	LRC module A on the top back of the disk shelf failed. Contact Network Appliance customer service to replace the LRC.
SES electronics Element 2: failed	LRC module B on the bottom back of the disk shelf failed. Contact Network Appliance customer service to replace the LRC.