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No
No
No
No
No
Yes
Yes
Yes
Mirroring
Spanning
Yes
Yes
Yes
Both indicators of HDD
1 and HDD 2 illuminate
red.
Both indicators of HDD 1
and HDD 2 blink red.
Is the operation mode
set to spanning or
mirroring?
Is the operation mode
set to mirroring?
Either indicator of HDD 1
or HDD 2 illuminates red.
Is the MODE rotary switch set correctly?
Is the cable connected correctly?
Is the MODE rotary switch set
correctly?
The HDDs of different capacities may
be used. Check the HDD capacity.
Is the operation mode
set to mirroring?
Though the HDD corresponding to the
illuminating indicator is not identified,
operation can be continued. The S-ATA
cable may not be connected properly or
a problem may occur in the HDDs.
The HDD corresponding to the
illuminating indicator is not identified.
The S-ATA cable may not be connected
properly or a problem may occur in the
HDDs.
During synchronization, a problem
occured in the source HDD and that
HDD became unidentifiable.
The synchronization cannot be
continued.
Both of the HDDs are not identified.
The S-ATA cable may not be connected
properly or a problem may occur in the
HDDs.
START
Either indicator of HDD 1
or HDD 2 illuminates red
and the other one blinks
red.
Troubleshooting
Diagnosis by HDD indicators
In the case that the HDD 1 or HDD 2 indicator on the front panel blinks or illuminates, check the problem in the HDD
according to the chart below.