Chapter 1 Getting to Know Your NSA
NSA221 User’s Guide
23
1.3 LEDs
The NSA LEDs (lights) tell you important information.
Figure 2 NSA Front Panel
This table describes the NSA’s LEDs.
Table 1 LEDs
LED COLOR STATUS DESCRIPTION
POWER Blue On The NSA is turned on and receiving power.
Off The NSA is turned off.
SYSTEM Green On The NSA has fully started and is operating normally.
Blinking The NSA is starting up or upgrading the firmware.
Red On The NSA has failed.
HDD1/
HDD2
Green On The hard disk drive is connected properly to the NSA.
Blinking The NSA is saving data to the hard disk drive.
Red On The NSA detected an error on the hard disk drive (like a bad
sector for example). The NSA automatically tries to recover a bad
sector, but the LED stays red until the NSA restarts.
Off The NSA cannot detect a hard disk in the disk bay.
USB Green On The USB device is connected properly to the NSA.
Blinking The NSA is saving data to the USB device.
Red On The USB device has failed and the NSA can no longer
detect it.
Off No USB device connected to the USB port.
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