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Which level is associated with byte-level parity?

Various levels of RAID dictate the type of activity that will take place within the RAID system. Which level is associated with byte-level parity?

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A.
RAID Level 0

B.
RAID Level 3

C.
RAID Level 5

D.
RAID Level 10

Explanation:
B: Redundant array of inexpensive disks (RAID) provides fault tolerance for hard drives and can improve system performance. Redundancy and speed are
provided by breaking up the data and writing it across several disks so that different disk heads can work simultaneously to retrieve the requested information.
Recovery data is also createdthis is called parityso that if one disk fails, the parity data can be used to reconstruct the corrupted or lost information. Different
activities that provide fault tolerance or performance improvements occur at different levels of a RAID system. RAID Level 3 is a scheme employing byte-level
striping and a dedicated parity disk. Data is striped over all but the last drive with parity data held on only the last drive. If a drive fails, it can be reconstructed from
the parity drive. The most common RAID levels used today are Levels 1, 3, and 5.
+ A is incorrect because only striping occurs at Level 0. Data are striped over several drives. No redundancy or parity is involved. If one volume fails, the entire
volume can be unusable. Level 0 is used for performance only.
+ C is incorrect because RAID 5 employs block-level striping and interleaving parity across all disks. Data are written in disk block units to all drives. Parity is
written to all drives also, which ensures there is no single point of failure. RAID Level 5 is the most commonly used mode.
+ D is incorrect because Level 10 is associated with striping and mirroring. It is a combination of Levels 1 and 0. Data are simultaneously mirrored and striped
across several drives and can support multiple drive failures.

One Comment on “Which level is associated with byte-level parity?

  1. Joe says:

    Level 3 is a scheme employing byte-level striping and a dedicated parity disk
    RAID 5 employs block-level striping
    Levels 1 and 0. Data are simultaneously mirrored and striped




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