Raid Levels explained

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RAID 5

Provides redundancy by writing data and parity informationacross three or more drives, thus increasing performance. The RAID Level 5provides the best combination of disk array technology. The mostpopular RAID level supplied.


Advantages

  • Most flexible of all disk arrays
  • Best balance cost / performance / protection of any RAID system
  • Allows multiple simultaneous writes
  • High read data rate
  • Medium write data rate
  • 3 drives minimum
  • Ideal for small write applications
  • Highly efficient

Disadvantages

  • Inefficient with large file transfer
  • Disk failure has an impact on performance

Applications

  • Transaction processing
  • Relational Databases
  • File & Print Servers
  • WWW, E-mail, and News servers
  • Intranet Servers