EMC2 Data Domain DD2500 Installation And Setup Manual page 6

Installation and Setup Guide
Front panel
Front LED indicators
6 Installation and Setup Guide
Figure 1 Front panel components
The front of the system contains 12 disk drive status LEDs that are normally blue and
blink when there is activity on the disk. The LEDs are shaped like triangles, and the apex
of the triangle points either left or right toward the disk whose status it represents. If the
disk drive has a failure, the disk's status LED turns from blue to amber.
There are two square-shaped system LEDs. A blue system power LED is on whenever the
system has power. An amber system fault LED is normally off and is lit amber whenever
the chassis or any other FRU in the system requires service.
Figure 2 Disk and system LEDs
1. System fault LED (square shaped).
2. System power LED (square shaped).
3. Disk drive LEDs (triangular shaped).
Part
System fault
System power
Disk drive status
When the bezel is affixed, the blue system power LED can be seen through the bezel.
State
Normally unlit. Amber indicates fault.
Steady blue indicates normal power.
Steady blue or blinking blue indicates normal operation. Amber
indicates fault or failure.