i-Stor - RAID User Guide
Chapter 3 - System Set Up / Page 7
The LED indication
for HDD1 is
referring to the hard
drive connected to
CN1, where HDD2
is referring to CN2.
When restoring the
data, the rebuild
LED will flash
yellow when the
data is copied from
HDD1 and green
when the data is
copied from HDD2.
RAID 1 - Mirroring
: This mode requires 2 identical drives to
implement. A RAID 1 creates an exact copy (or mirror) of a set
of data on the second drive. This is useful when reliability and
backup are more important than data capacity. The available
capacity to the user will only be as large as a single drive but
when one of the hard drives fails, it can be replaced and the
data rebuilt automatically.
The i-Stor enclosure has an LED indication at the front to show
the status of the hard drives. As long as both HDD1 and HDD2
are working OK, the LED is green. When a drive fails, the
corresponding LED will turn red. To replace the faulty drive, do
the following:
1. Turn off the i-Stor and remove both the power supply and
the interface cable.
2. Open the enclosure and replace the faulty hard drive
(HDD1=CN1, HDD2=CN2).
3. Finish the assembly and connect the power supply but do
not connect the interface cable to your computer yet.
4. Turn the power ON and let it rebuild the data. If it rebuilds
from HDD1 to HDD2, the rebuild LED will flash yellow,
where from HDD2 to HDD1 it will flash green.
5. Wait for the rebuild LED to stop flashing.
6. When the rebuild is finished, connect the interface cable to
your computer. Done.
Note: Rebuilding the data might take several hours, depending
on the capacity of your hard drives. As reference, an 80GB
HDD will take about 2 hours to rebuild.
