Duration
Frequency
Description
Long beep (1.5 seconds)
3 (every 5 minutes)
• A power error occurred.
• The system fan is not functioning.
• The fan module has been removed.
• The NAS data cannot be copied to the external
storage device connected to the front USB port.
2
• The storage pool is about to reach full capacity.
• The storage pool has reached full capacity.
• A storage pool status error occurred.
• The disk volume is about to reach its full
capacity.
• The disk volume has reached its full capacity.
• The drives are in degraded mode.
• The drive is rebuilding.
• A volume status error occurred.
• A drive is plugged in or out.
1
• The NAS is powering off.
• The NAS was powered off by force shutdown
(hardware shutdown).
• The NAS was powered on successfully and is
ready.
Long and short beeps
1 long and 2 short beeps The JBOD expansion unit has been removed.
TS-x64U User Guide
Basic Operations
48
