Answer: GP3 volume type

## Explanation The correct answer is **C. GP3 volume type**. Here's why: ### Key Requirements Analysis: 1. **High block storage capacity** - The company needs significant storage space 2. **Peak IOPS ≤ 15,000** - Performance requirement is moderate 3. **Provision disk performance independent of storage capacity** - This is a critical requirement 4. **Most cost-effective solution** - Cost optimization is important ### EBS Volume Type Comparison: **GP2 (General Purpose SSD v2):** - Performance is tied to storage capacity (3 IOPS per GB) - To get 15,000 IOPS, you'd need 5,000 GB (5TB) of storage - Not ideal when you need performance independent of capacity **GP3 (General Purpose SSD v3):** - **Performance is independent of storage capacity** - Baseline performance of 3,000 IOPS (can be provisioned up to 16,000 IOPS) - Can provision IOPS separately from storage size - **Most cost-effective** for this scenario **io1 (Provisioned IOPS SSD v1):** - Performance independent of capacity - Can provision up to 64,000 IOPS - More expensive than GP3 for similar performance - Overkill for 15,000 IOPS requirement **io2 (Provisioned IOPS SSD v2):** - Performance independent of capacity - Higher durability (99.999% vs 99.9%) - More expensive than GP3 - Designed for mission-critical applications needing highest durability ### Why GP3 is the Best Choice: 1. **Performance independence**: GP3 allows separate provisioning of IOPS from storage capacity 2. **Cost-effectiveness**: GP3 is cheaper than io1/io2 for the same performance level 3. **Adequate performance**: GP3 supports up to 16,000 IOPS, which covers the 15,000 IOPS requirement 4. **Flexibility**: Can scale IOPS independently as needed without changing storage size ### Cost Comparison: - GP3: Pay separately for storage and provisioned IOPS (if above baseline) - io1/io2: Higher cost per GB and per provisioned IOPS - GP2: Would require over-provisioning storage to get required IOPS, potentially more expensive For workloads with moderate IOPS requirements (≤ 16,000 IOPS) where performance needs to be independent of storage capacity, GP3 is the most cost-effective EBS volume type.

Author: LeetQuiz Editorial Team