About Raid Modes - LaCie 2big Network 2 User Manual

LaCie 2big Network 2
User Manual

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
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
RAID 0
RAID 1
• DESIGN BY NEIL POULTON
(Fig. 84). RAID 1 provides maximum
Protection
100%
50%
Administering Your LaCie 2big Network 2
RAID 0
A1
B1
C1
D1
E1
Disk 1
Fig. 83
RAID 1
A1
B1
C1
D1
E1
Disk 1
Fig. 84
page 59
A2
B2
C2
D2
E2
Disk 2
A1
B1
C1
D1
E1
Disk 2