E10-001 · Question #46
E10-001 Question #46: Real Exam Question with Answer & Explanation
The correct answer is B. 32 KB. RAID Technique-Striping Strip size (also called stripe depth) describes the number of blocks in a strip, and is the maximum amount of data that can be written to or read from a single disk in the set, assuming that the accessed data starts at the beginning of the strip. All strip
Question
Options
- A24 KB
- B32 KB
- C48 KB
- D64 KB
Explanation
RAID Technique-Striping Strip size (also called stripe depth) describes the number of blocks in a strip, and is the maximum amount of data that can be written to or read from a single disk in the set, assuming that the accessed data starts at the beginning of the strip. All strips in a stripe have the same number of blocks. Having a smaller strip size means that the data is broken into smaller pieces while spread across the disks. Stripe size is a multiple of strip size by the number of data disks in the RAID set. For example, in a five disk striped RAID set with a strip size of 64KB, the stripe size is 320 KB (64KB x 5). Stripe width refers to the number of data strips in a stripe. Striped RAID does not provide any data protection unless parity or mirroring is used. For parity RAID, the stripe size calculation does not include the parity strip. For example in a five (4 + 1) disk parity RAID set with a strip size of 64 KB, the stripe size will be 256 KB (64 KB x 4). RAID6 = 2x Parity 8 Disk RAID-6 Set = 6 Data + 2 Parity Strip Size = 192KB / 6 = 32KB
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