9
1.2 Check System Status
LED Display & System Status Overview
LED Colour LED Status Description
Flashes blue
every 0.5 sec
1) A USB device (connected to front
USB port) is being detected
2) A USB device (connected to front
USB port) is being removed from
the NAS
3) The USB device (connected to the
front USB port) is being accessed
4) The data is being copied to or from
the external USB or the eSATA
device
Blue
1) A front USB device is detected
(after the device is mounted)
2) The NAS has finished copying the
data to or from the USB device
connected to the front USB port
USB Blue
Off No USB device can be detected
Flashes The eSATA device is being accessed
eSATA* Orange
Off No eSATA device can be detected
System
Status
Red/
Green
Flashes green
and red
alternately
every 0.5 sec
1) The hard drive on the NAS is being
formatted
2) The NAS is being initialised
3) The system firmware is being
updated
4) RAID rebuilding is in process*
5) Online RAID capacity expansion is
in process*
6) Online RAID level migration is in
process*
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