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SG0-001 · Question #337

Which of the following describes a RAID level 5 implementation?

The correct answer is D. Offers data protection and increased throughput by striping data and parity across all drives. RAID level 5 implements data protection and performance by striping data and parity information across all drives in the array. This configuration ensures data recovery in the event of a single drive failure.

Storage Functionality

Question

Which of the following describes a RAID level 5 implementation?

Options

  • AUsed in data intensive or single-user environments which accesses long sequential records to
  • BUses mirroring where the data on one drive is duplicated on another
  • CProvides no data redundancy, but has the largest storage capacity
  • DOffers data protection and increased throughput by striping data and parity across all drives

How the community answered

(42 responses)
  • A
    2% (1)
  • B
    5% (2)
  • C
    2% (1)
  • D
    90% (38)

Why each option

RAID level 5 implements data protection and performance by striping data and parity information across all drives in the array. This configuration ensures data recovery in the event of a single drive failure.

AUsed in data intensive or single-user environments which accesses long sequential records to

This description aligns more with RAID 0 or certain high-performance single-disk configurations focused on speed for specific workloads, not RAID 5, which prioritizes redundancy.

BUses mirroring where the data on one drive is duplicated on another

This describes RAID 1 (mirroring), where data is duplicated entirely on another drive, which is different from RAID 5's distributed parity approach.

CProvides no data redundancy, but has the largest storage capacity

This describes RAID 0 (striping without parity) which maximizes capacity but offers no redundancy, whereas RAID 5 is designed for data protection and recovery.

DOffers data protection and increased throughput by striping data and parity across all drivesCorrect

RAID 5 distributes both data blocks and parity blocks across all drives in the array. This striping with distributed parity offers fault tolerance, as the missing data from a failed drive can be reconstructed from the remaining data and parity blocks, while also improving read performance.

Concept tested: RAID 5 architecture and features

Source: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/understanding-raid

Topics

#RAID 5#data protection#striping with parity

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