Which of the following BEST describes RAID 10?
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A. B. C. D.A.
RAID 10 (also known as RAID 1+0 or RAID 0+1) is a RAID configuration that combines disk mirroring and disk striping to provide both redundancy and performance benefits.
In RAID 10, data is first striped across multiple disk drives in a way that improves read and write performance. Then, each striped set is mirrored onto another set of disk drives, providing redundancy for data protection. This means that if one disk fails, the data can be recovered from the mirrored set.
To illustrate this, let's say we have four disks in a RAID 10 array. The disks are divided into two pairs, and data is striped across each pair. Then, each pair is mirrored onto the other pair. This results in a configuration that provides both improved performance (due to striping) and redundancy (due to mirroring).
In contrast, RAID 0 (striping) provides improved performance but no redundancy, while RAID 1 (mirroring) provides redundancy but no performance benefits. RAID 5 (striping with distributed parity) provides both performance and redundancy, but with a more complex configuration.
Therefore, the answer that BEST describes RAID 10 is A. Mirroring with striping.