SK0-004 · Question #258
Which of the following BEST describes RAID 5?
The correct answer is D. High performance and fault tolerance. RAID 5 combines data striping across drives with distributed parity, delivering both improved I/O performance and single-drive fault tolerance.
Question
Which of the following BEST describes RAID 5?
Options
- AFault tolerance and failure recovery
- BFault tolerance and zero configuration
- CZero configuration and high performance
- DHigh performance and fault tolerance
How the community answered
(20 responses)- A5% (1)
- B5% (1)
- D90% (18)
Why each option
RAID 5 combines data striping across drives with distributed parity, delivering both improved I/O performance and single-drive fault tolerance.
While RAID 5 can rebuild after a failure, 'failure recovery' is not a primary benefit - rebuilds are slow and expose the array to additional risk, making it a weakness rather than a selling point.
RAID 5 requires explicit configuration of at least three drives with parity distribution, so 'zero configuration' does not apply.
Zero configuration is not a characteristic of RAID 5, and this option omits fault tolerance, which is a core reason RAID 5 is deployed.
RAID 5 stripes data across a minimum of three drives, enabling parallel reads and improving throughput. Parity information is distributed across all drives rather than stored on a dedicated drive, so the array can reconstruct lost data and survive any single drive failure. These two properties - high performance and fault tolerance - are the defining benefits of RAID 5.
Concept tested: RAID 5 distributed parity performance and fault tolerance
Source: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-fault-tolerance
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