312-38 practice question 16 of 35

Which technique is used in RAID level 0 where the data is split into blocks and written evenly across multiple disks?

Full set: 363 questions
Answer options
A: Disk mirroring
B: Disk stripping Correct answer
C: Data splitting
D: Disk partition
Correct Answer:
B. Disk stripping
Explanation

RAID level 0 uses a technique called disk striping. In this configuration, data is divided into blocks, and these blocks are written sequentially across multiple physical disks. This parallel I/O operation significantly increases performance (read/write speeds) because the workload is distributed. However, RAID 0 provides no fault tolerance or redundancy; the failure of a single disk results in the loss of all data in the array. The term "stripping" is a common misspelling of "striping."

Why Incorrect

A. Disk mirroring: This technique, used in RAID 1, involves duplicating data onto two or more disks to provide redundancy, not performance enhancement through striping.
C. Data splitting: This is a generic term. While data is split, "disk striping" is the specific technical term for the method used in RAID 0.
D. Disk partition: This refers to dividing a single physical disk into multiple logical sections, which is unrelated to how RAID distributes data across multiple disks.

References

1. Patterson, D. A., Gibson, G., & Katz, R. H. (1988). A case for redundant arrays of inexpensive disks (RAID). In Proceedings of the 1988 ACM SIGMOD international conference on Management of data (pp. 109-116). (See Section 3.1, "RAID Level 0: Nonredundant," which describes the striping mechanism). https://doi.org/10.1145/50202.50214

2. Arpaci-Dusseau, R. H., & Arpaci-Dusseau, A. C. (2018). Operating Systems: Three Easy Pieces. Arpaci-Dusseau Books. (See Chapter 40, "Redundant Arrays of Inexpensive Disks (RAIDs)," Section 40.4, which details RAID-0 and striping).

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