The answer is Provisioned IOPS SSD such as io2, because it is the only EBS volume type designed to deliver consistent high IOPS for a transactional database, regardless of volume size. Unlike gp3, which offers a baseline burstable performance, io2 allows you to provision a guaranteed, predictable IOPS rate with sub-millisecond latency, making it essential for latency-sensitive transactional workloads that cannot tolerate performance variability. On the SAA-C03 exam, this scenario tests your ability to distinguish between throughput-optimized and IOPS-optimized storage; a common trap is choosing gp3 for its lower cost, but the question’s emphasis on “consistent high IOPS” and “managed AWS-native control” directly points to io2 as the only volume that meets both requirements. Remember the memory tip: “IOPS needs a guarantee? Go with io2.”
SAA-C03 Practice Question: io2 is a Provisioned IOPS SSD EBS volume type.
This SAA-C03 practice question tests your understanding of design high-performing architectures. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: io2 is a Provisioned IOPS SSD EBS volume type.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A document portal requires consistent high IOPS for a transactional database on EC2. Which EBS volume type is most suitable? The architecture review board prefers a managed AWS-native control.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Provisioned IOPS SSD such as io2
The scenario requires consistent high IOPS for a transactional database, which demands low-latency, predictable performance. Provisioned IOPS SSD (io2) is the only EBS volume type that allows you to specify a guaranteed IOPS rate independent of volume size, making it ideal for latency-sensitive transactional workloads. It is also a managed AWS-native service, satisfying the architecture review board's preference.
Key principle: io2 is a Provisioned IOPS SSD EBS volume type.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
sc1 Cold HDD
Why it's wrong here
sc1 is low-cost cold storage with lower performance.
✗
Instance store only
Why it's wrong here
Instance store can be fast but is ephemeral and not generally suitable for durable databases.
✓
Provisioned IOPS SSD such as io2
Why this is correct
io2 is designed for business-critical workloads requiring consistent high IOPS and durability.
Related concept
io2 is a Provisioned IOPS SSD EBS volume type.
✗
st1 Throughput Optimized HDD
Why it's wrong here
st1 is for throughput-oriented sequential workloads, not high-IOPS transactional databases.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse 'high IOPS' with throughput-optimized HDDs (st1) or mistakenly think instance store offers managed persistence, but the key differentiator is the need for consistent, provisioned IOPS and managed durability that only io2 provides.
Detailed technical explanation
How to think about this question
io2 volumes use a Non-Volatile Memory Express (NVMe) interface on Nitro-based instances to deliver single-digit millisecond latencies and up to 256,000 IOPS per volume. Under the hood, io2 volumes support multi-attach for clustered databases and provide 99.999% durability, making them the go-to choice for mission-critical transactional systems. In real-world scenarios, a high-traffic e-commerce platform's order database would rely on io2 to maintain sub-10ms response times during peak loads.
KKey Concepts to Remember
io2 is a Provisioned IOPS SSD EBS volume type.
io2 is designed for consistent high IOPS and low-latency workloads.
io2 offers high durability and is suitable for critical transactional databases.
IOPS can be provisioned independently of volume size for io2.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
io2 is a Provisioned IOPS SSD EBS volume type.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. io2 is a Provisioned IOPS SSD EBS volume type. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Review io2 is a Provisioned IOPS SSD EBS volume type., then practise related SAA-C03 questions on the same topic to reinforce the concept.
Design High-Performing Architectures — This question tests Design High-Performing Architectures — io2 is a Provisioned IOPS SSD EBS volume type..
What is the correct answer to this question?
The correct answer is: Provisioned IOPS SSD such as io2 — The scenario requires consistent high IOPS for a transactional database, which demands low-latency, predictable performance. Provisioned IOPS SSD (io2) is the only EBS volume type that allows you to specify a guaranteed IOPS rate independent of volume size, making it ideal for latency-sensitive transactional workloads. It is also a managed AWS-native service, satisfying the architecture review board's preference.
What should I do if I get this SAA-C03 question wrong?
Review io2 is a Provisioned IOPS SSD EBS volume type., then practise related SAA-C03 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
io2 is a Provisioned IOPS SSD EBS volume type.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A document portal requires consistent high IOPS for a transactional database on EC2. Which EBS volume type is most suitable?
medium
A.sc1 Cold HDD
B.Instance store only
✓ C.Provisioned IOPS SSD such as io2
D.st1 Throughput Optimized HDD
Why C: Provisioned IOPS SSD (io2) is the correct choice because it delivers consistent, high IOPS performance required for transactional databases running on EC2. io2 volumes offer a 99.999% durability and can sustain up to 256,000 IOPS per volume, making them ideal for latency-sensitive workloads like OLTP databases.
Variation 2. A document portal requires consistent high IOPS for a transactional database on EC2. Which EBS volume type is most suitable? The design must avoid adding custom operational scripts.
medium
A.sc1 Cold HDD
B.Instance store only
✓ C.Provisioned IOPS SSD such as io2
D.st1 Throughput Optimized HDD
Why C: Provisioned IOPS SSD volumes (io2) are designed for latency-sensitive transactional workloads that require consistent, high IOPS. They deliver a predictable performance level with a 99.9% durability guarantee, making them ideal for a database on EC2 without needing custom scripts to manage performance.
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Question Discussion
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