Led On A Hard Disk Drive - NEC Express5800/T120d User Manual

Chapter 1 General Description
4.7.6

LED on a hard disk drive

Each Hot-Swap HDD is equipped with DISK LED.
2.5-inch hard disk drive
DISK LED indicates the following status by lighting.
•
The LED flashes green
This indicates a HDD is being accessed.
•
The LED flashes amber
When logical drives are configured in the RAID System, this indicates the installed HDD is broken.
In RAID system having data redundancy (RAID1, RAID5, RAID6, RAID10, RAID50, or RAID60), the
server can continue operation even if one (or two HDDs in RAID6 or RAID60) of the HDDs fails.
However, replace the HDD as soon as possible, and perform reconstruction (rebuild) processing.
(The failing HDD can be replaced by using hot swapping.)
•
The LED flashes green and amber alternately
This indicates that the HDD is being rebuilt (not a defect). In a RAID System, the HDD is automatically
rebuilt upon replacing a broken HDD (auto rebuild feature). The LED flashes green and amber
alternately while the HDD is being rebuilt.
The LED goes off when rebuilding completes. If rebuilding fails, the LED flashes amber.
DISK LED
Important Observe the following precautions whenever you use the auto rebuild feature.
• Do not turn off or reboot the server while a HDD is being rebuilt.
• Wait at least 90 seconds before installing a HDD after removing one.
• Do not replace a HDD while another HDD is being rebuilt.
Express5800/T120d User's Guide
4. Names and Functions of Parts
3.5-inch hard disk drive
41