Question #839
A company wants to use Amazon S3 to archive logs from its on-premises application servers. The application servers use an NFS-based file system, and the company requires the new solution to maintain NFS compatibility. The company wants to transition logs to archival storage after 7 days. If archived logs are needed for compliance audits, the company can tolerate retrieval times of several days. Which solution meets these requirements MOST cost-effectively?
Deploy an AWS Storage Gateway file gateway associated with an S3 bucket. Transfer logs from the on-premises servers to the file gateway. Create an S3 Lifecycle rule to transition logs to S3 Standard-Infrequent Access (S3 Standard-IA) after 7 days.
Deploy an AWS Storage Gateway volume gateway associated with an S3 bucket. Transfer logs from the on-premises servers to the volume gateway. Create an S3 Lifecycle rule to transition logs to S3 Glacier Deep Archive after 7 days.
Deploy an AWS Storage Gateway tape gateway associated with an S3 bucket. Transfer logs from the on-premises servers to the tape gateway. Create an S3 Lifecycle rule to transition logs to S3 Glacier Flexible Retrieval after 7 days.
Deploy an AWS Storage Gateway file gateway associated with an S3 bucket. Transfer logs from the on-premises servers to the file gateway. Create an S3 Lifecycle rule to transition logs to S3 Glacier Deep Archive after 7 days.
Explanation
The question requires maintaining NFS compatibility and transitioning logs to cost-effective archival storage. Here's why option D is correct:
1. NFS Compatibility: AWS Storage Gateway File Gateway (used in D) supports NFS, enabling seamless integration with the on-premises application servers. Options B (Volume Gateway) and C (Tape Gateway) do not provide NFS-compatible file interfaces.
2. Cost-Effective Archival: S3 Glacier Deep Archive (used in D) is the lowest-cost storage class for long-term archival, with retrieval times of up to 48 hours, which aligns with the company's tolerance. Option A uses S3 Standard-IA, which is more expensive and not archival. Option C uses S3 Glacier Flexible Retrieval, which is costlier than Deep Archive.
3. Lifecycle Rule: Option D transitions logs after 7 days to Glacier Deep Archive, meeting the requirement while minimizing costs.
Key Points:
- Use File Gateway for NFS compatibility.
- Glacier Deep Archive is optimal for compliance archives with multi-day retrieval tolerance.
- Avoid Tape/Volume Gateways for NFS use cases.
Answer
The correct answer is: D