Deployment Guide

Table 13. Ops panel LED states (continued)
System
Power
(Green/
Amber)
Module Fault
(Amber)
Identity
(Blue)
LED display Associated LEDs/
Alarms
Status
On On X X No module LEDs Enclosure logical fault
On Blink X X Module status LED on
SBB module
Unknown (invalid or mixed) SBB module
type is installed, I
2
C bus failure (inter-
SBB communications). EBOD VPD
configuration error
On Blink X X PCM fault LEDs, fan
fault LEDs
Unknown (invalid or mixed) PCM type is
installed or I
2
C bus failure (PCM
communications)
X Blink Enclosure identification or invalid ID
selected
X= Disregard
Actions:
• If the Ops panel Module Fault LED is on, check the module LEDs on the enclosure rear panel to narrow the fault to a CRU, a
connection, or both.
• Check the event log for specific information regarding the fault, and follow any Recommended Actions.
• If installing a controller module or IOM CRU:
○ Remove and reinstall the controller module or IOM per the Dell EMC PowerVault ME4 Series Storage System Owner’s Manual.
○ Check the event log for errors.
• If the CRU Fault LED is on, a fault condition is detected.
○ Restart this controller from the partner controller using the PowerVault Manager or CLI.
○ If the restart does not resolve the fault, remove the controller module or IOM and reinsert it.
• If the previous actions do not resolve the fault, contact Dell EMC for assistance.
Disk drive carrier module LEDs
A green LED and amber LED mounted on the front of each drive carrier module display the disk drive status.
• In normal operation, the green LED is on and flickers as the drive operates.
• In normal operation, the amber LED is:
○ Off if there is no drive present.
○ Off as the drive operates.
○ On if there is a drive fault.
Figure 32. LEDs: Drive carrier LEDs (SFF and LFF modules) used in 2U enclosures
1.
Disk Activity LED 2. Disk Fault LED
3. Disk Fault LED 4. Disk Activity LED
72 Troubleshooting and problem solving