AWS Certified Solutions Architect - Associate
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A company uses high block storage capacity to runs its workloads on premises. The company's daily peak input and output transactions per second are not more than 15,000 IOPS. The company wants to migrate the workloads to Amazon EC2 and to provision disk performance independent of storage capacity.
Which Amazon Elastic Block Store (Amazon EBS) volume type will meet these requirements MOST cost-effectively?
Other
Community
UAnonymous
A
GP2 volume type
B
io2 volume type
C
GP3 volume type
D
io1 volume type
Explanation:
Explanation
The correct answer is C. GP3 volume type.
Here's why:
Key Requirements Analysis:
- High block storage capacity - The company needs significant storage space
- Peak IOPS ≤ 15,000 - Performance requirement is moderate
- Provision disk performance independent of storage capacity - This is a critical requirement
- 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:
- Performance independence: GP3 allows separate provisioning of IOPS from storage capacity
- Cost-effectiveness: GP3 is cheaper than io1/io2 for the same performance level
- Adequate performance: GP3 supports up to 16,000 IOPS, which covers the 15,000 IOPS requirement
- 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.
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