Question #806
Which AWS service is designed to deliver eleven nines (99.999999999%) of durability for stored objects?
Amazon S3
Amazon Elastic File System (Amazon EFS)
Amazon Elastic Block Store (Amazon EBS)
Amazon FSx
Explanation
Amazon S3 (Simple Storage Service) is the correct answer because it is explicitly designed to provide 99.999999999% (11 nines) durability for stored objects. This is achieved through redundant storage across multiple Availability Zones (AZs) and automatic data replication.
Other options are incorrect because:
- B. Amazon EFS: While EFS offers high durability, it is a file storage service (not object storage) and is typically associated with lower durability compared to S3.
- C. Amazon EBS: EBS volumes are block storage with replication within a single AZ, offering ~99.8-99.9% durability, far below eleven nines.
- D. Amazon FSx: FSx is for specialized file systems (e.g., Windows, Lustre) and does not provide eleven nines durability.
Key Point: S3's eleven nines durability applies to objects stored in all storage classes (Standard, Glacier, etc.), making it the best choice for highly durable object storage.
Answer
The correct answer is: A