EMC Proven Professional – PowerMax Specialist — Question 74

A company needs to expand their dynamic pool by 10 TB. The current dynamic pool consists of sixty-three 7.6 TB SSD drives that are configured for RAID5 12+1.
What is the minimum number of drives needed for the pool expansion?

Answer options

• A. 1
• B. 2
• C. 13
• D. 15

Correct answer: B

Explanation

To expand the pool by 10 TB in a RAID5 configuration, additional drives must be added to maintain parity and performance. Each 7.6 TB SSD contributes to the total usable capacity after accounting for parity. The calculation shows that adding 2 more drives is the minimum required to achieve the desired expansion without compromising the RAID setup.