4. Names and Functions of Parts
Express5800/R120d-2E User’s Guide
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Chapter 1 General Description
4.7.5
Optical disk access LED
The access LED for optical disk drive at the front of the server flashes when a CD or DVD is being accessed.
4.7.6
UID LED (ID)
The UID LED is provided one each at the front and rear of the server. If you press the UID switch provided at
the front or rear of the server, the light turns on. If you press it again, the light turns off. It flashes when
commands from software are received. This LED is used to identify the target server among multiple servers
installed in a rack. Especially when performing maintenance from behind the server, lighting the LED will
help you to identify which server to work with.
UID LED pattern
Explanation
On (blue)
The UID switch is pressed (ON).
Off
The UID switch is not pressed (OFF).
Tips
You can turn on or flashing an LED using remote management software.
4.7.7
LED on a hard disk drive
DISK LED on a hard disk drive to be installed in the drive bay indicates different states
DISK Access LED pattern
Explanation
On(green)
This indicates a hard disk drive is being accessed
On (amber)
This indicates a hard disk drive is failing.
Flashing (green and amber
alternately)
This indicates that a hard disk drive is being rebuilt (not a defect).
In a RAID system, the hard disk drive is automatically rebuilt upon replacing a
failed hard disk drive (auto rebuild feature).
Off
Hard disk drive is halted.
Important Observe the following precautions whenever you use the auto rebuild feature.
•
Do not turn off or reboot the server while a hard disk drive is being rebuilt.
•
Wait at least 90 seconds before installing a hard disk drive after removing one.
•
Do not replace a hard disk drive while another hard disk drive is being rebuilt.
DISK LED
2.5-inch hard disk drive
DISK LED
3.5-inch hard disk drive
