User's Manual

Introduction
Summary Comparison of RAID Levels
Data
RAID Common Description Array's Data
Transfer
Level Name Capacity Reliability
Capacity
Data distributed across the
0
Disk
disks in the array. ( N ) Low Very
S
t r ip
i
n
g
No redundant Information disks High
provided.
Ver y
1 Mirroring All data Duplicated 1*disk High
High
3 Parallel Data sector is subdivided ( N-1 ) Ver y Highest
Transfer and distributed across all disks High of all
Disks with data disk. Redundant listed
Parity information stored on a alter-
dedicated parity disk. natives
5 Independent Data sectors are distributed ( N-1 ) Very Very
Access Array as with disk striping, disks High High
with Rotating redundant Information is
Parity interspersed with user data.
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