NEC Express5800 series User Manual page 21

DISK ACCESS Lamp ( )
The DISK ACCESS lamp indicates the status of the hard disk mounted in the 3.5-inch disk bay.
The lamp turns green each time access is made to the hard disk.
When the DISK ACCESS lamp turns amber, it indicates that a hard disk failure has occurred.
Check the hard disk lamp for the status of the failing hard disk.
IMPORTANT:
disk array controller (which is additionally mounted), the access lamp
signal cable (connected to the connector on the motherboard) must be
connected from the disk array controller to the motherboard.
UID Lamp (UID)
Pressing the UID switch toggles the front panel UID lamp (blue) and the motherboard UID
lamp on and off. The motherboard UID lamp is visible through the rear of the chassis and
allows you to locate the server you're working on from the rear of the servers on a rack.
Disk Access Lamp
The disk access lamp of the floppy disk drive or CD-ROM drive is on while the drive is
accessed.
If a hard disk in the server is connected to the internal
System Overview 11