Question #1419
A company requires an Amazon S3 storage class that ensures data retrieval in under 10 milliseconds for real-time analytics workloads. Which solution meets this requirement?
S3 Express One Zone
S3 Standard
S3 Glacier Flexible Retrieval
S3 Glacier Instant Retrieval
Explanation
The correct answer is A. S3 Express One Zone.
Why A is correct:
- S3 Express One Zone is specifically optimized for single-digit millisecond latency (under 10ms), making it ideal for real-time analytics, machine learning, and high-performance computing workloads.
- It stores data in a single Availability Zone, enabling faster access compared to multi-AZ storage classes.
Why other options are incorrect:
- B. S3 Standard: While it offers low latency, it does not guarantee sub-10ms retrieval times and is optimized for general-purpose storage.
- C. S3 Glacier Flexible Retrieval: Designed for archival data with retrieval times ranging from minutes to hours, unsuitable for real-time needs.
- D. S3 Glacier Instant Retrieval: Despite 'Instant' in the name, it has retrieval times of milliseconds to minutes and is intended for archived data accessed infrequently.
Key Points to Remember:
- S3 Express One Zone is the only storage class explicitly designed for ultra-low latency (<10ms).
- Glacier storage classes prioritize cost savings over speed and are unsuitable for real-time workloads.
- Always match storage class features (latency, durability, cost) to workload requirements.
Answer
The correct answer is: A