LEDs
LED Status Description
System Status Flashes green and red alternately every
0.5 seconds
• The drive is being formatted.
• The JBOD 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.
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.
• The system temperature is over 65°C.
• One or more power supply units are
abnormal.
Flashes red every 2 seconds The JBOD is in degraded mode (one
member drive failed in RAID 1, RAID 5,
RAID 6).
Flashes red once The JBOD received a command from a
remote control.
Flashes green every 2 seconds • The JBOD is not configured.
• A drive is not formatted.
Green The JBOD is ready.
Off • All drives are in standby mode.
• The JBOD is turned off.
QNAP JBOD Enclosure - TL-R1220Sep-RP/TL-R1620Sep-RP User Guide
Basic Operations 28
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