LEDs
LEDs indicate system status and related information when the device is powered on. The following LED
information applies only when the drive is correctly installed and when the device is connected to the
network or to a host.
For details on the location of the LEDs, see
Components
.
Note
The 2.5 Gigabit Ethernet LEDs are only applicable to TS-431X3.
LED
Status
Description
System
Status
Flashes green and red
alternately every 0.5 seconds
• The drive is being formatted.
• The NAS 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 cable or USB cable, and do not
force-exit the application.
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 occured when accessing (read/write) the data.
• A bad sector is detected on the hard drive.
• The NAS 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 NAS is in degraded mode (one member drive failed in
RAID 1, RAID 5, or RAID 6).
Flashes green every 0.5
seconds
• The NAS is starting up.
• The NAS is not configured.
• A drive is not formatted.
Green
The NAS is ready.
Off
All drives are in standby mode.
TS-431KX/TS-431X3 User Guide
Basic Operations
37
