LEDs

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LED colors are used consistently throughout the enclosure and its components to indicate status.

Green
Good or positive indication.
Flashing green or amber
Non-critical condition.
Amber
Fault.
Note: When the enclosure is powered on, all LEDs light up for a short period to ensure that they are working. This condition does not indicate a fault unless the LEDs remain lit after a few seconds.

PSU LEDs

Figure 1. PSU LEDs
Call-outs show the LEDs
Table 1. PSU LED states
PSU Fail (Amber) AC Missing (Amber) Power (Green) Status
Off Off Off No AC power to either PSU.
On On Off PSU present, but not supplying power or PSU alert state (usually due to critical temperature).
Off Off On Main AC present, switch is on. This PSU is providing power.
Off Off Flashing AC power present, PSU in standby (other PSU is providing power).
Flashing Flashing Off PSU firmware download
Off On Off AC power unavailable, PSU in standby (other PSU is providing power).
On On On GEM software lost communication with the PSU.
On - Off PSU failed. Follow the procedure in "Replacing a Power Supply Unit (PSU)".

Cooling module LEDs

Figure 2. Cooling module LEDs
Rendering shows LED locations
Table 2. Cooling module LED descriptions
LED Description
Module OK Constant green indicates that the fan is working correctly. Off means that the fan failed. Follow the procedure in Replace a cooling module.
Fan Fault Amber indicates that a fan failed. Follow the procedure in Replace a cooling module.

Operator’s panel LEDs

The operator’s (ops) panel displays the aggregated status of all the modules, as shown in the following figure.

Figure 3. Operator’s panel LEDs
LEDs called out
Table 3. Ops panel LED descriptions
Display/LED Description
Unit Identification Display Usually shows the identification number for the enclosure, but can be used for other purposes.
Power On/Standby LED Amber if the system is in standby. Green if the system has full power.
Module Fault LED Amber indicates a fault in a PSU, cooling module or compute module. Check the drawer LEDs to see whether a drive fault is indicated (see Drawer LEDs)
Logical Status LED Amber indicates a fault from something other than GEM (usually a disk drive fault, or a compute module that is failed). Check the drawer LEDs to see whether a drive fault is indicated (see Drawer LEDs).
Drawer 1 Fault LED Amber indicates a drive, cable, or sideplane fault in drawer 1. Open the drawer and check the disk drive LEDs for faults.
Drawer 2 Fault LED Amber indicates a drive, cable, or sideplane fault in drawer 2. Open the drawer and check the disk drive LEDs for faults.
Table 4. Ops panel LED states
Unit ID display Power (green/ amber) Module fault (amber) Logical status (amber) Drawer 1 fault Drawer 2 fault Associated LEDs or alarms Status
X On Off Off Off Off   Aux present, overall power failed or off
X On On X X X Single beep, then double Ops panel power on (5s) test state
X On Off Off Off Off   Power on, all functions good
X On On X Off Off PSU fault LEDs, fan fault LEDs Any PSU fault, fan fault, over or under temperature
X On On X Off Off Compute module LEDs Any compute module fault
X On Flashing X Off Off   Enclosure logical fault such as VPD configuration error
X On Flashing X Off Off Module status LED on compute module Unknown compute module type installed, I2C Bus failure, or VPD configuration error
X On Flashing X Off Off PSU fault LEDs, fan fault LEDs Unknown (invalid or mixed) PSU module type installed, or I2C Bus failure (PSU comms)
X On On X Off Off DDIC fault LED, drawer fault LED Drive failure has occurred causing loss of availability or redundancy
X On X Flashing Off Off Arrays in impacted state Arrays operating background function
X On Flashing Flashing Off Off S1 Unit ID number different from "Start Of Day"
X On X X On Off Fault LED on Drawer 1 Fault present on drawer 1 (drive, cable or fanout card fault)
X On X X Off On Fault LED on Drawer 2 Fault present on drawer 2 (drive, cable or fanout card fault)
Flashing X X X X X   SES controlled enclosure identify
X = disregard

Drawer LEDs

The following figure shows the names and locations of the disk drawer LEDs.

Figure 4. Drawer LEDs (left sideplane only)
Call-outs for the LEDs
Table 5. Drawer LED descriptions
LED Description
Sideplane OK/Power Good Green if the sideplane card is working and no power problems exist.
Drawer Fault Amber if a drawer component failed. If it is a drive that failed, an amber LED lights up on the failed drive; follow the procedure in Replace a disk drive in carrier (DDIC). If the drives are functioning correctly, contact your storage vendor to identify the failure.
Logical Fault Amber for a drive fault. Flashes amber if one or more arrays are in an impacted state.
Cable Fault Amber if the cabling between the drawer and the back of the enclosure failed. Contact your storage vendor to resolve the problem.
Activity Bar Graph Shows the amount of data I/O from zero segments lit (no I/O) to all six segments lit (maximum I/O).

Disk drive in carrier (DDIC) LED

Each disk drive has a single amber drive fault LED as shown in the following figure. When lit, it indicates a drive failure. The drive should be replaced as soon as possible using the procedure described in Replace a disk drive in carrier (DDIC).

Figure 5. Drive Fault LED
The drive fault LED is called out.

Compute Module LEDs

The LEDs on the compute module depend on the type of module in use. The following figure shows the LEDs for a common I/O module, the 6 Gb/s SAS EBOD.

Figure 6. Compute module LEDs
Note: SAS ports are not supported for any external SAS connections.

The following table shows the possible values for the LEDs.

Table 6. Compute module LED descriptions
LED Description
ID LED Blue when the module is being identified.
Fault LED Amber when a fault in the controller exists. For the replacement procedure, see Replacing an SBB Compute Module.
OK LED

Green when the controller is operating correctly.

Flashing green when a controller VPD error exists.
SAS Activity LEDs

Steady green indicates a connection but no activity.

Flashing green indicates both connection and activity.

Note: SAS ports are not supported for any external SAS connections.
Ethernet status LEDs

Left side:

  • Off when there is no connection.
  • Steady green when the network link is active.
  • Flashing green when there is network activity.

Right side – network speed:

  • LS controller management port and E12EBD:
    • Off: 10/100Mb/s.
    • Green: 1Gb/s.
  • LS controller twin Ethernet ports:
    • Off: No link.
    • Amber: 100Mb/s.
    • Green: 1Gb/s or 10Gb/s.
POST LEDs Power On Self Test LEDs are used to show the boot progress of the x86 subsystem. If it fails to boot, the LEDs show what stage of the process was being performed when the problem occurred.