LED
Status
Description
System Status
Green
The RAID enclosure is ready.
Red
• The drive is invalid.
• The disk volume has reached its full capacity.
• The disk volume is about to reach its full capacity.
• The system fan is not functioning.
• An error occurred when accessing (read/write) the
data.
• A bad sector is detected on the hard drive.
• The RAID enclosure is in degraded read-only mode
(two member drives failed in RAID 5 but the data can
still be read).
• The RAID enclosure is in degraded mode (one
member drive failed in RAID 1 or RAID 5).
• Hardware self-test error
Flashes red every 2
seconds
The RAID enclosure is in standby mode, but the system is
abnormal.
Flashes green every 2
seconds
All drives are in standby mode.
Flashes green every second The RAID enclosure is not configured.
Flashes green and red
alternately every 0.5
seconds
• The drive is being formatted.
• The device firmware is being updated.
Important
When updating the device firmware, do not
remove the power cable, USB cable, or
force-exit the application.
• RAID rebuilding is in progress.
Off
The RAID enclosure is powered off.
Drive
Red
A drive read/write error occurred.
Flashes red
The data is being accessed and a read/write error occurs
during the process.
Green
The drive can be accessed.
Flashes green
• Data is being accessed.
• Data is being copied.
Off
All drives are in standby mode.
QNAP External RAID Enclosure User Guide
Basic Operations
28
