Icy Box IB-RD2252 Benutzerhandbuch Seite 19

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Dual-Bay RAID Storage Enclosure
1.6 RAID Modes
Hard drives of identical capacities are recommended. If the capacities are different, the total amount of
the space that can be used will depend on the drive with the smallest capacity. The difference in perfor-
mance is only visible for fast interfaces like eSATA.
1.6.1 RAID 0 - Disk Striping
The drives are shown as one large single volume but the total size will depend on the drive with the
smallest capacity. This setting is used where speed is the primary objective but RAID Level 0 (also called
striping) is not redundant. This form of array splits each piece of data across the drives in segments;
since data is written without any form of parity data-checking, it allows for the fastest data transfer. On
the downside, if one drive becomes damaged, the whole array can become corrupted.
Storage Capacity
1.6.2 RAID 1 - Disk Mirroring
Two drives show up as one volume but only 50% of the total capacity, depending on the drive with the
smallest capacity, can be used. RAID 1 creates an exact copy (or mirror) of a set of data on the second
drive. This is useful when reliability and backup take precedence over storage capacity. Should one hard
drive fail, it can be replaced and the data rebuilt automatically.
Storage Capacity
1.6.3 Changing the RAID Mode
The RAID mode should be set after installing the drives and before first formatting the drives.
1. Make sure the power is off and then install the hard drives.
2. Unlock the RAID switch on the rear of the device.
3. Connect the power supply to the device and then plug it into the power outlet to turn the
device on.
4. Enter the setup menu and set your preferred RAID mode. The system will restart and ask
for confirmation.
5. Initialize the disk, create a partition and format the drives.
6. Lock the RAID switch to prevent an accidental change of the RAID mode.
IB-RD2252
Data Safety
Data Safety
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Performance
Performance
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