
Appendix A
LED descriptions
69
24-drive controller enclosure or supported expansion enclosure
6
5
2
3
4
1
2
3
4
5
6
7
8
9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
Notes
:
Left ear
Right ear
Integers on disks indicate drive slot numbering sequence.
The enlarged detail view at left shows LED icons from the left ear cover that correspond to the chassis LEDs.
Ear cover icons for LEDs
1
Right ear
LED
Description
Definition
1
Enclosure ID
Green — On
The enclosure ID value is shown using 7-segment display. Enables you to correlate
the enclosure with logical views presented by management software. Sequential
enclosure ID numbering of controller enclosures begins with the integer 1. The
enclosure ID for an attached drive enclosure is nonzero.
2
System Power
Green — The enclosure is powered on with at least one power supply operating
normally.
Off — Both power supplies are off; the system is powered off.
3
Module Fault
Amber — Fault condition exists. The event has been identified, but the problem
needs attention.
Off — No fault condition exits.
4
Unit Identification (UID)
Blue — Blinking
The enclosure is identified.
Off — Identity LED is not illuminated.
5
Disk drive Fault/UID
See
6
Disk drive Online/Activity
See
Figure 40 LEDs: 24-drive controller or expansion enclosure—front panel