Dell EMC Associate – Information Storage and Management v5 — Question 60

What set of factors are used to calculate the disk service time of a hard disk drive?

Answer options

• A. Seek time - Rotational latency - Bandwidth
• B. Seek time - Rotational latency - I/O operations per second
• C. Seek time - Rotational latency - RAID level
• D. Seek time - Rotational latency - Data transfer rate

Correct answer: D

Explanation

The correct answer is D because the disk service time is impacted by the seek time, rotational latency, and the data transfer rate, which collectively determine how quickly data can be read from or written to the disk. Options A, B, and C include factors that do not accurately measure the efficiency of disk service time like bandwidth, I/O operations per second, and RAID level, which are not direct contributors to the service time calculation.