Dell PowerEdge R900 - Manual (Page 16)

16 About Your System
Figure 1-2. Hard Drive Indicators
The Activity LED indicates command activity between the hard disk drives
and storage controller.
The Status LED is a bi-color (Green/Amber) LED that indicates the state of a
drive in a slot. The color and blink rate of the LED indicates the state of the
drive as shown in Table 1-2.
1 green and amber drive-status
indicator
2 green drive-activity indicator
1
2