Dell EMC ME4 Series - 2 Troubleshooting and problem solving; Overview; LEDs

Troubleshooting and problem solving
These procedures are intended to be used only during initial conguration, for the purpose of verifying that hardware setup is successful.
They are not intended to be used as troubleshooting procedures for congured systems using production data and I/O.
Topics:
• Overview
• LEDs
• Troubleshooting 2U enclosures
• Troubleshooting 5U enclosures
• Temperature sensors
• Host I/O
Overview
The enclosure system includes a Storage Enclosure Processor (SEP) and associated monitoring and control logic to enable it to diagnose
problems with the enclosure’s power, cooling, and drive systems. Management interfaces allow for provisioning, monitoring, and managing
the storage system.
NOTE
: See Fault isolation methodology when conducting system diagnostics.
LEDs
LED colors are used consistently throughout the enclosure and its components for indicating status:
• Green: good or positive indication
• Blinking green/amber: non-critical condition
• Amber: critical fault
• Blue: Controler/IOM identication
2U enclosure LEDs
PCM LEDs
Under normal conditions, the PCM OK LEDs will be a constant green.
Table 11. PCM LED states
PCM OK
(Green)
Fan Fail
(Amber)
AC Fail
(Amber)
DC Fail
(Amber)
Status
O O O O No AC power on any PCM
O O On On No AC power on this PCM only
On O O O AC present; PCM working correctly
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