Figure 3.1 RAID 0 Array

MegaRAID Controller

Segment 1

Segment 2

Segment 3

Segment 4

Segment 5

Segment 6

Segment 7

Segment 8

Segment 9

Segment 10

Segment 11

Segment 12

3.3RAID 1

In RAID 1, the MegaRAID SCSI 320-2 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.

Uses

Use RAID 1 for small databases or any other environment

 

that requires fault tolerance but small capacity.

 

 

Strong Points

Provides complete data redundancy. RAID 1 is ideal for any

 

application that requires fault tolerance and minimal capacity.

 

 

Weak Points

Requires twice as many disk drives. Performance is impaired

 

during drive rebuilds.

 

 

Drives

2

 

 

Figure 3.2 shows a RAID 1 array.

RAID 1

3-3

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