Icy Box IB-RD2253-U31 Manuel page 5

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IB-RD2253-U31
RAID Description
The following table shows the available RAID options and settings:
1. LARGE:
To be exact LARGE is not a real RAID mode, but could be seen as one. In LARGE Mode, the space of the
second disc is simply appended to the first disc. So the space of the two disks is added to one big disk.
2. RAID 1:
In RAID 1 mode all data is written identically on both discs. So if one disc fails the other contains all data
again. This provides security against the failure of one disk at the cost of the bigger disks space.
3. RAID 0
RAID 0 writes data block wise alternating on the two disks. So two data blocks can be written at the same
time which enhances speed. The disk space of the combined volume is twice the smaller disk size.
4. SINGLE
Like LARGE it is not really a RAID mode. This means that both discs are integrated as separate hard drives
with its own content, independent from each other.
RAID mode setting
ATTENTION: Setting or changing the RAID mode requires you to re-format the drives. This will erase all
data on the hard drives that are being formatted. Make sure to backup all existing data first!
1. Start the assembled IB-RD2253-U31
2. Set the RAID switch and select your preferred RAID mode (white colour shows the switch position)
3. Press the "RAID-Reset-Button" on rear side for 5 seconds to confirm the setting.
4. Complete the setting inside Disk management of your system.
Attention: In order for the computer to access volumes larger than 2 TB, both the hardware and OS
need to have the capacity to support large volumes.
5. Done
Replacing hard drives
When a drive fails, the corresponding HDD LED (1 or 2) will be solid blue light during write/read status; in
which case the HDD will simply not be accessible anymore.
If only one drive is defective and the RAID mode is set to RAID 1, the data can still be accessed but we
strongly recommend replacing the faulty drive immediately to assure continued proper backup and data safety.
1. Check the HDD LED and replace the faulty drive. You can add a file to your hard drive and the cor-
responding HDD LED will be solid blue light, indicating the defective drive (see picture as above to identify
the HDD inside the tray).
2. For RAID 1: just exchange the defective HDD and power on the IB-RD2253-U31, the RAID
array will be rebuilt automatically. During this process, both blue LEDs will glow very slowly (dark-bright
interplay). Rebuilding the RAID array can take several hours, depending on the drive capacity. Please await
the end of the rebuild process before switch off the device. After the rebuild process has been finished both
LEDs are lighted up continuously in blue.
Attention: please don't push the RAID-reset switch button; otherwise all data will go lost.
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