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LaCie RAID Technology White Paper
STAnDARD RAID LeveLS
RAID 0
RAID 0 (also called FAST mode in some LaCie devices), is the fastest RAID mode. Requiring at least 2 drives,
RAID 0 stripes data onto each disk. The available capacities of each disk are added together so that one logical
volume mounts on the computer.
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.
A1
B1
C1
D1
A2
B2
C2
D2
A3
B3
C3
D3
A4
B4
C4
D4
RAID 0
Disk 1
Disk 2
Disk 3
Disk 4
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 mul-
tiple streams of video for optimal playback perfor-
mance. 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.
LaCie Products with RAID 0
LaCie 2big quadra
✦
LaCie 4big quadra
✦
LaCie big disk quadra (built-in)
✦
LaCie little big disk quadra (built-in)
✦
LaCie 5big network
✦
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 capacity of 1000GB, the total ca-
pacity of the array would be 4000GB:
C = (4*1000)
RAID 0
RAID 1
RAID 3
RAID 3+Spare
RAID 5
RAID 5+Spare
RAID 6
RAID 0+1
RAID 10
Concatenation
JBOD
RAID Selection
