SK0-003 · Question #578
Which of the following RAID levels provides the BEST read and write performance?
The correct answer is A. RAID 0. RAID 0 provides the best read and write performance by striping data across multiple disks without any overhead for redundancy.
Question
Which of the following RAID levels provides the BEST read and write performance?
Options
- ARAID 0
- BRAID 1
- CRAID 5
- DRAID 10
How the community answered
(34 responses)- A91% (31)
- B6% (2)
- D3% (1)
Why each option
RAID 0 provides the best read and write performance by striping data across multiple disks without any overhead for redundancy.
RAID 0, or striping, distributes data across multiple disks, allowing concurrent read and write operations to different parts of a file, thereby significantly increasing I/O performance by parallelizing operations across all drives in the array. This level has no redundancy, meaning the full capacity of all drives is available for data storage and performance.
RAID 1 (mirroring) duplicates data on two disks, which improves read performance but has a write penalty because data must be written to both disks.
RAID 5 (striping with parity) distributes data and parity information across disks, which offers good read performance but incurs a write penalty due to the need to calculate and write parity information for every write operation.
RAID 10 (striping and mirroring) combines RAID 0 and RAID 1, offering good read and write performance with redundancy, but its performance is not as high as RAID 0 alone because of the mirroring overhead.
Concept tested: RAID levels performance characteristics
Source: https://learn.microsoft.com/en-us/windows-server/storage/disk-management/understanding-raid
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