LED
Status
Description
System Status
Flashes green and
red alternately
every 0.5 seconds
• The drive is being formatted.
• The device is being initialized.
• The operating system is being updated.
• RAID rebuilding is in progress.
• Online RAID Capacity Expansion is in progress.
• Online RAID Level Migration is in progress.
• The firmware is being updated.
Important
When updating the firmware, do not remove the
power cord or USB cable, and do not force-exit
the application.
Red
• The drive is invalid.
• The shared folder has reached its full capacity.
• The shared folder 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 device is in degraded read-only mode (two member
drives failed in RAID 5 or RAID 6 but the data can still be
read).
• A hardware self-test error occurred.
Flashes red every
0.5 seconds
The device is in degraded mode (one member drive failed in
RAID 1, RAID 5, or RAID 6).
Green
The device is ready.
Flashes green
every 0.5 seconds
• The device is not configured.
• A drive is not formatted.
Off
• All drives are in standby mode.
• The device is powered off.
Drive
Flashes red
The data is being accessed and a read/write error occurs during
the process.
Red
A drive read/write error occurred.
Flashes green
Data is being accessed.
Green
The drive is ready.
Off
No drive was detected.
TS-h973AX User Guide
Basic Operations
37
