LSI ICH6R Manuel d'utilisateur télécharger pdf (Page 20)

2-2 RAID Levels

Figure 2.1 RAID 0 Array

2.2 RAID 1

RAID 1 (Figure 2.2) duplicates all data from one drive to a second drive. RAID

1 provides complete data redundancy, but at the cost of doubling the required

data storage capacity.

Figure 2.2 RAID 1 Array

Segment 1

Segment 3

Segment 5

Segment 2

Segment 4

Segment 6

Segment 7 Segment 8

Uses Databases or any other mission critical environment that requires

fault tolerance.

Strong Points Provides complete data redundancy. RAID 1 is ideal for any

application that requires fault tolerance.

Weak Points Requires twice as many hard drives. Performance is impaired during

drive rebuilds.

Drives Two

Segment 1

Segment 2

Segment 3

Segment 1 Duplicated

Segment 2 Duplicated

Segment 3 Duplicated

Segment 4 Segment 4 Duplicated

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 71 72

Pas de commentaire

LSI ICH6R Manuel d'utilisateur Page 20