Proware EN-1400A6B-CM, Руководство пользователя

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NAS System
User Manual 7
1.3 RAID Levels
Below is the list of RAID Levels available for configuration in the NAS.
RAID
Level
No. of
Allowed
Failed
Drives
Description
Minimum
Required
Number
of Drives
0 None
Block striping is provided and yields higher
performance than with individual drives. There
is no redundancy.
1
1 1
Drives are mirrored. All data is 100%
duplicated on an equivalent drive. Fully
redundant.
2
5 1
Data is striped across several physical drives.
Parity protection is used for data redundancy.
3
6 2
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 2
Striping over two RAID1 RAID sets. This level
provides mirroring and redundancy through
striping.
4