Dell EMC ME4 Series, Руководство по развертыванию

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Controller module or IOM LEDs
• For information about controller module LEDs, see Controller module LEDs .
• For information about expansion module LEDs, see IOM LEDs .
Temperature sensors
Temperature sensors throughout the enclosure and its components monitor the thermal health of the storage system. Exceeding the
limits of critical values causes a notification to occur.
Module LEDs
Module LEDs pertain to controller modules and IOMs.
Controller module LEDs
Use the controller module LEDs on the face plate to monitor the status of a controller module.
Table 18. Controller module LED states
CRU OK (Green) CRU Fault
(Amber)
External host port
activity (Green)
Status
On Off Controller module OK
Off On Controller module fault – see “Replacing a controller module” in the
Dell EMC PowerVault ME4 Series Storage System Owner’s
Manual
Off No external host port connection
On External host port connection – no activity
Blinking External host port connection – activity
Blinking System is booting
Actions:
• If the CRU OK LED is blinking, wait for the system to boot.
• If the CRU OK LED is off, and the controller module is powered on, the module has failed.
• Check that the controller module is fully inserted and latched in place, and that the enclosure is powered on.
• Check the event log for specific information regarding the failure.
• If the CRU Fault LED is on, a fault condition is detected.
• Restart the controller module from the partner controller module using the ME Storage Manager or CLI.
• If the restart does not resolve the fault, remove the controller module and reinsert it.
• If the previous actions do not resolve the fault, contact your supplier for assistance. Controller module replacement may be necessary.
IOM LEDs
Use the IOM LEDs on the face plate to monitor the status of an IOM .
Table 19. IOM LED states
CRU OK (Green) CRU Fault
(Amber)
External host port
activity (Green)
Status
On Off Controller module OK
Off On IOM module fault – see “Replacing an IOM” in the Dell EMC
PowerVault ME4 Series Storage System Owner’s Manual
Off No external host port connection
On HD mini-SAS port connection – no activity
Blinking HD mini-SAS port connection – activity
Troubleshooting and problem solving 67