Chapter 9. Bigger, Faster, More Reliable Storage with RAID

Upon completing this chapter, you will be able to

  • Participate in discussions and planning sessions regarding the use of RAID technology in storage network designs

  • Compare the advantages and disadvantages of parity RAID and mirroring

  • Describe the exclusive OR (XOR) operation used in parity RAID, and describe the processes of degraded mode operations and parity rebuilds

  • Discuss the difference between RAID 10 and RAID 5, including the RAID 5 write penalty

RAID (redundant array of inexpensive disks) is one of the most important technologies in storage networking and is one of the main functions of storage virtualization. While many people associate RAID with hardware products, such as disk subsystems ...

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