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Table Of Contents  CertiGuide to A+ (A+ 4 Real)
 9  Chapter 10: The Small Computer System Interface, SCSI
      9  RAID

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Summary of Common RAID Levels

Table 25 contains a summary of the key characteristics of the four RAID levels we just examined.


Table 25: Summary of Common RAID Level Characteristics

 

RAID 0

RAID 1

RAID 5

RAID 0/1 (RAID 10)

Description

Data Striping (No fault tolerance)

Disk Mirroring

Data Striping with Distributed Parity

RAID 0 and RAID 1 combined

Minimum No. of Drives

Two

Two

Three

Four

Benefit

Highest Performance

Data Protection through Redundancy

Best Balance of cost/performance/data protection

Highest Performance with data protection

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