SATA II RAID Subsystem
User Manual
15
RAID Management
The subsystem can implement several different levels of RAID technology. RAID levels
supported by the subsystem are shown below.
RAID Level
Description
Min. Drives
0
Block striping is provide, which yields higher
performance than with individual drives. There is
no redundancy.
1
1
Drives are paired and mirrored. All data is 100%
duplicated on an equivalent drive. Fully
redundant.
2
3
Data is striped across several physical drives.
Parity protection is used for data redundancy.
3
5
Data is striped across several physical drives.
Parity protection is used for data redundancy.
3
6
Data is striped across several physical drives.
Parity protection is used for data redundancy.
Requires N+2 drives to implement because of
two-dimensional parity scheme.
4
10
Combination of RAID levels 1 and 0. This level
provides striping and redundancy through
mirroring. RAID 10 requires the use of an even
number of disk drives to achieve data protection,
while RAID 1E (Enhanced Mirroring) uses an odd
number of drives.
4 (3)
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