DSN-4000 Series Hardware Reference Guide
5
Table 2-1. Enclosure LEDs
LED
Description
Power
Green
: Indicates that the primary array is powered on.
Global Enclosure Status
Green
: Indicates that the primary array is powered on and functioning.
Red
: Indicates that a fault condition exists and requires user attention
Controller Activity
Flashing Green
: Indicates that there is system activity
System Heartbeat
Flashing Green
: While the system is operating normally, this LED blinks seven (7) times, then
turns off for approximately 4 seconds, then repeats with a total cycle time of 8 seconds
Figure 2-3. Detailed View of the Drive Carrier
Table 2-2. Drive Carrier Status LEDs
LED
Description
Disk Status
Off
:
No hard disk is present.
Green
: The hard disk is powered on and available.
Red
: The hard disk has failed and should be replaced.
Power/Activity
Off
: The disk is idle or no disk is present.
Flashing Green
: A hard disk is present and there is disk activity.
Figure 2-4. Drive Slot Numbers on the DSN-4X00 Primary Array
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