Dell PowerVault ME5 Series Storage System Deployment Guide

2U enclosure disk drive carrier module LEDs

Disk drive status is monitored by a green LED and an amber LED mounted on the front of each drive carrier module, as shown in the following figure.

The drive module LEDs are identified in the figure, and the LED behavior is described in the table following the figure.

In normal operation, the green LED are on, and flicker as the drive operates.
In normal operation the amber LED will be:
- Off if there is no drive present.
- Off as the drive operates.
- On if there is a drive fault.

Table 1. Drive carrier LED states States of the drive carrier LEDs
Activity LED (Green)	Fault LED (Amber)	Status/condition*
Off	Off	Off (disk module/enclosure)
Off	Off	Not present
Blink off with activity	Blinking: 1s on /1s off	Identify
1 down: Blink with activity 2 down: Off	On	Drive link (PHY lane) down
On	On	Fault (leftover/failed/locked-out)
Blink off with activity	Off	Available
Blink off with activity	Off	Storage system: Initializing
Blink off with activity	Off	Storage system: Fault-tolerant
Blink off with activity	Off	Storage system: Degraded (not critical)
Blink off with activity	Blinking: 3s on/ 1s off	Storage system: Degraded (critical)
On	Off	Storage system: Quarantined
Blink off with activity	Blinking: 3s on/ 1s off	Storage system: Offline (dequarantined)
Blink off with activity	Off	Storage system: Reconstruction
Blink off with activity	Off	Processing I/O (whether from host or internal activity)
*If multiple conditions occur simultaneously, the LED state behaves as indicated by the condition listed earliest in the table, as rows are read from top to bottom.