Deployment Guide

Table Of Contents
Figure 33. LEDs: DDIC 5U enclosure disk slot in drawer
1. Slide latch (slides left)
2. Latch button (shown in the locked position)
3. Drive Fault LED
Table 20. DDIC LED descriptions
Fault LED (Amber) Status/description*
Off Off (disk module/enclosure)
Off Not present
Blinking: 1 s on/1 s off Identify
Any links down: On Drive link (PHY lane) down
On Fault (leftover/failed/locked-out)
Off Available
Off Storage system: Initializing
Off Storage system: Fault-tolerant
Off Storage system: Degraded (non-critical)
Blinking: 3 s on/1 s off Storage system: Degraded (critical)
Off Storage system: Quarantined
Blinking: 3 s on/1 s off Storage system: Offline (dequarantined)
Off Storage system: Reconstruction
Off Processing I/O (whether from host or internal activity)
*If multiple conditions occur simultaneously, the LED state behaves as indicated in the previous table.
Each DDIC has a single Drive Fault LED. If the Drive Fault LED is lit amber, a disk fault is indicated. If a disk failure occurs, follow
the procedure in Replacing a DDIC in the Dell EMC PowerVault ME4 Series Storage System Owners Manual.
5U controller module or IOM LEDs
For information about controller module LEDs, see Controller module LEDs on page 80.
For information about expansion module LEDs, see IOM LEDs on page 80.
5U 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.
Troubleshooting and problem solving
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