EasyRAID E6 Guide de l'utilisateur télécharger pdf (Page 20)

Introduction

Summary Comparison of RAID Levels

Data

RAID Common Description Array's Data

Transfer

Level Name Capacity Reliability

Capacity

Data distributed across the

Disk

disks in the array. ( N ) Low Very

t r ip

No redundant Information disks High

provided.

Ver y

1 Mirroring All data Duplicated 1*disks High

High

3 Parallel Data sector is subdivided ( N-1 ) Very 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.

1-12

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 84 85

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EasyRAID E6 Guide de l'utilisateur Page 20