LaCie hard disk MAX
• DESIGN BY NEIL POULTON
RAID
User Manual
page 19
5. RAID
This section will help you decide which RAID mode is right for
your application. For instructions on how to adjust the RAID
mode, refer to section
5.3. Changing the RAID Mode
.
TECHNICAL NOTE:
Capacity varies depending upon RAID
mode.
BIG (RAID 0)
= total accessible capacity
Safe 100 (RAID 1)
= 50% capacity
5.1. BIG (RAID 0)
BIG (also called RAID 0 or “Spanning” in some LaCie devices),
allows for the fastest data transmission and capacity of the differ-
ent RAID settings. 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 be-
comes inaccessible because parts of the data have been written
to all disks.
IMPORTANT INFO:
In BIG mode, if one physical disk fails,
the data of both disks become inaccessible.
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.
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
Fig. 5.1
