LaCie 2big Network 2
• DESIGN BY NEIL POULTON
Administering Your LaCie 2big Network 2
User Manual
page 59
Fig. 83
Fig. 84
RAID 0
A1
B1
C1
D1
E1
A2
B2
C2
D2
E2
Disk 1
Disk 2
RAID 1
A1
B1
C1
D1
E1
A1
B1
C1
D1
E1
Disk 1
Disk 2
4.17.2. About RAID Modes
RAID0:
RAID 0 (also called Spanning mode in some LaCie devices),
is the fastest RAID mode. In a RAID 0 array, the available capacities
of each disk are added together so that one logical volume mounts
on the computer (
Fig. 83
). It offers the best performance but no
protection in the case that a disk fails.
CAUTION:
If one physical disk in the array fails, the data of all
disks becomes inaccessible because parts of the data have been
written to all disks.
RAID1:
RAID 1 is a secure RAID mode that requires at least 2 drives
and works with pairs of drives (
Fig. 84
). RAID 1 provides maximum
data safety in the event of a single disk failure, but because data is
written twice, performance is reduced slightly when writing. RAID 1 is
a good choice when safety is more important than speed.
RAID Mode
Capacity
Protection
RAID 0
100%
RAID 1
50%
