EMC Information Storage Fundamentals — Question 3

An application generates 4200 small random I/Os at peak workloads with a read/write ratio of 2:1. What is the disk load at peak activity for a RAID 6 configuration?

Answer options

Correct answer: D

Explanation

In a RAID 6 configuration, each write I/O requires two reads and two writes because of the parity. Given a 2:1 read/write ratio, the total I/O operations will be 4200 reads and 2100 writes, leading to a total disk load of 4200 + (2100 * 2) = 11200. The other options do not account for the additional writes required for parity in RAID 6.