C H A P T E R 6

Checking LEDs

This chapter describes the front and back panel LEDs, which give the clear status of the operation of all drives and modules. Topics covered in this chapter are:

LEDs When Array Is First Powered On

Front Panel LEDs

Back Panel LEDs

For troubleshooting flowcharts related to LEDs, refer to Troubleshooting Flowcharts.

6.1 LEDs When Array Is First Powered On

With the array powered up but not connected to a server, you should see the LED conditions described in TABLE 6-1.


Drive LEDs	Solid green
Chassis ear LEDs	Solid green

6.2 Front Panel LEDs

The drive LEDs are located between the rows of drives on the front panel, as shown in FIGURE 6-1. The system operation LEDs are located on the right ear of the chassis.

FIGURE 6-1 Front Panel LEDs

Figure shows the LEDs on the front panel.

FIGURE 6-2 shows the front panel LEDs and the Reset button. Use a paperclip to push the Reset button to silence a failed component alarm. See Section 7.2, Silencing Audible Alarms for more information about silencing audible alarms.

FIGURE 6-2 Chassis Ear LEDs and Reset Button on Front Panel

Photograph shows the Reset push button and following LEDs: power, fan, temp, and event.

The following table lists the front panel LEDs.


LED	LED Color	Description
Drive	Solid green	Good: Drive power-up and spin-up OK.
	Blinking green	Good: Drive activity.
	Solid amber	Failed: Drive failure.
Power (Light bulb icon) Monitors the DC output voltage within tolerance specification. Overcurrent protection shutting down any voltage output is also displayed. Voltage thresholds: +5 VDC +/-.25 VDC +12 VDC +/-.6 VDC Current thresholds: +5 VDC 35A +12 VDC 25A	Solid green	Good: Power supply good.
	Solid amber	Failed: One or more output voltages out-of-range.
Fan (Fan icon) Monitors the fan speed within nominal operational RPM specification of 5000 RPM.	Solid green	Good: Both fans rotating at 4000 RPM or higher.
	Solid amber	Faulty/Failed: One or both fans rotating a less than 4000 RPM.
Temp (Thermometer icon) Monitors the temperature level and indicates violations of internal temperature thresholds of 55C and 60C.	Solid green	Good: Under temperature threshold of 55C.
	Solid amber	Failed: Temperature threshold equal to or over 55C.
	Blinking amber	Failed: Temperature threshold equal to or over 60C. Blinking frequency of 4 Hz +/- 1 Hz.
Event (Caution icon) Indicates any abnormal or failure event in the I/O board.	Solid green	Normal operation of I/O board.
	Solid amber	Failed I/O board.
	Blinking amber	Indicates that the version of the SES firmware or associated hardware PLD code on one controller does not match that on the other controller.

Note - To test that the LEDs work, using a paperclip, press and hold the Reset button for 5 seconds. All the LEDs should change from green to amber when you perform this test. Any LED that fails to light indicates a problem with the LED. When you release the Reset button, the LEDs return to their initial state.

6.2.1 Correcting SES or PLD Firmware Version Conflicts

From time to time, firmware upgrades are made available as patches that you can download from SunSolve trademark Online, located at:

http://sunsolve.sun.com

Each patch applies to a particular piece of firmware, including the firmware programmed into SES and PLD chips included in your controller.

SunSolve has extensive search capabilities that can help you find these patches, as well as regular patch reports and alerts to let you know when firmware upgrades and other patches become available. In addition, SunSolve provides reports about bugs that have been fixed in patch updates.

Each patch includes an associated README text file that provides detailed instructions about how to download and install that patch. But, generally speaking, all firmware downloads follow the same steps:

Locating the patch on SunSolve that contains the firmware upgrade you want

Downloading the patch to a location on your network

Using your array software (SSCS or sscli[1M]) or array firmware, in some cases, to "flash" the firmware to the device it updates

Refer to the release notes for your array for patch numbers of firmware and other patches available for your array at the time of release.

When you replace an I/O controller, the new controller might have a version of SES or PLD firmware different from the other controller in your array. If this mismatch occurs, when you install a controller you hear an audible alarm and see a blinking amber Event light.

To synchronize the SES firmware and hardware PLD versions, you need to download new SES firmware through Sun StorEdge Configuration Service software or the command-line interface (CLI).

If you have not installed this software, you need to install it from the software CD that shipped with your array. Refer to the Sun StorEdge 3000 Family Configuration Service User's Guide for your array to see instructions for downloading firmware for devices, or refer to the sccli(1M) man page for similar instructions using the CLI. Refer to the release notes for your array for instructions about where to obtain the firmware that you need to download.

When you open Sun StorEdge Configuration Service software or the CLI and connect to the array, an error message alerts you to the mismatched version problem.

6.3 Back Panel LEDs

The back panel LED colors indicate the conditions described in the following figures and tables.

Note - Although an amber light on the back panel often indicates a faulty component, a steady amber light on the Ethernet link LED indicates normal Ethernet activity. See TABLE 6-3 for more information.

6.3.1 I/O Controller Module LEDs

FIGURE 6-3 shows the I/O controller module and its LEDs on the back panel.

FIGURE 6-3 I/O Controller Module and Battery Module LEDs

Figure shows RAID controller module and its LEDs.

FIGURE 6-4 shows the I/O expansion module and its LEDs.

FIGURE 6-4 I/O Expansion Module for an Expansion Unit

Drawing shows I/O Module for an Expansion Unit.

The I/O controller module LEDs and their color definitions are shown in TABLE 6-3.


LED	Purpose	LED Color Definition
Battery	Status of battery	Solid green - Battery charged Blinking green - Battery charging Solid amber - Battery failed
Activity	I/O activity of host and disk ports	Off - Not busy (no I/O activity) Blinking green - Busy (active I/O)
Cache	Status of memory cache	Off - Clean cache Blinking green - Dirty cache; indicates if data in memory and is not written to disk yet
Ethernet link (active controller)	Status of Ethernet link	Solid amber - Active link Off - Inactive connection
Ethernet link (inactive controller)	Status of Ethernet link	Off - Active connection on inactive controller or on active connection
Ethernet active	Status of Ethernet activity	Flashing green - Busy
RAID controller	Status of controller on I/O controller module	Blinking green - Good (primary controller) Solid green - Good (secondary controller) Solid amber - Failed RAID controller or I/O module
SFP link (L)	SFP link status	Solid green - Active good FC Connection Off - Empty or failed FC connection
SFP speed (S)	SFP speed status	Solid green - 2 Gbit Off - 1 Gbit

Note - The Sun StorEdge 3510 FC array's Ethernet link LED differs from that found on a Sun StorEdge 3310 SCSI array. A connected port's Ethernet link LED glows solid amber only on the active controller, because a FC port is considered active only if its controller is active. On an inactive controller, a port's Ethernet link LED is off whether it is connected or not. The absence of a solid amber light on a connected port's Ethernet link LED for a connected port indicates that this controller is not the active controller.

Note - An SFP link status (L) LED is off if there is no connection, or a failed connection, to this SFP.

6.3.2 Power Supply and Fan Module LEDs


Purpose	LED	LED Color Definition
Monitors the DC output voltage within tolerance specification. Overcurrent protection shutting down any voltage output is also displayed. Voltage thresholds: +5 VDC +/-.25 VDC +12 VDC +/-.6 VDC Current thresholds: +5 VDC 35A +12 VDC 25A	Solid green Solid amber	Power supply and fans are good. Failed: One or more output voltages out-of-range or fan speed is under 3150 RPM.

The following figure shows the AC power supply and fan module.

FIGURE 6-5 AC Power Supply and Fan Module

Figure shows AC power supply and fan module.

The following figure shows the DC power supply and fan module.

FIGURE 6-6 DC Power Supply and Fan Module

Figure shows DC power supply and fan module.