Raid 0 - LaCie 2big Network User Manual

LaCie 2big Network
User Manual

5.2. RAID 0

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. 84).
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.
Applications
RAID 0 is ideal for users who need maximum speed and capacity.
Video editors working with very large files may use RAID 0 when
editing multiple streams of video for optimal playback performance.
A RAID 0 array is more suited for actively working with files (editing
video, for example) and should not be used as a single storage
backup solution or on mission critical systems.
How RAID 0 Capacity Is Calculated
Each disk in a RAID 0 system should have the same capacity.
Storage capacity in a RAID level 0 configuration is calculated by
multiplying the number of drives by the disk capacity, or C = n*d,
where:
C = available capacity
n = number of disks
d = disk capacity
For example, in a RAID 0 array with four drives each with a capac-
ity of 1000GB, the total capacity of the array would be 4000GB:
C = (4*1000)
A1
B1
C1
D1
Disk 1
Fig. 84
RAID and Disks
page 52
A2
B2
C2
D2
Disk 2