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Answer: By migrating the catalog to an Amazon Elastic File System (EFS).
The correct answer is D. Amazon Elastic File System (EFS) is designed for high availability and durability. It provides a file storage service that can be mounted to multiple EC2 instances, ensuring that data is readily available and durable across different instances and even different Availability Zones. Option A, Amazon ElastiCache for Redis, is primarily used for in-memory data caching rather than long-term durable storage. Option B, deploying a larger EC2 instance with a larger instance store, does not solve the problem of durability and high availability across failures or multiple instances. Option C, moving the catalog to Amazon S3 Glacier Deep Archive, is suitable for long-term archiving, but it is not optimized for the accessibility and low-latency retrieval required for a frequently accessed catalog.
Author: LeetQuiz Editorial Team
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How should a solutions architect ensure high availability and durability for a company's EC2 instance store-backed catalog?
A
By moving the catalog to Amazon ElastiCache for Redis.
B
By deploying a larger EC2 instance with an expanded instance store.
C
By transferring the catalog to Amazon S3 Glacier Deep Archive.
D
By migrating the catalog to an Amazon Elastic File System (EFS).
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