AWS Certified Solutions Architect Professional SAP-C02 Practice Question
A media-streaming company runs a video-processing pipeline on Amazon EKS. During unpredictable peak events, hundreds of pods must simultaneously read 30 TB of source videos, write intermediate data, and store the final transcoded files. Less than 10 percent of the data is reread in any 30-day period. The company wants to modernize its shared storage to meet these goals:
Eliminate manual capacity planning and automatically match throughput to bursty workloads.
Continue to provide a fully managed, POSIX-compliant NFS file system that can be mounted by all pods.
Minimize long-term storage cost for rarely accessed video files with no operational overhead.
Which solution best meets these requirements?
Create an Amazon EFS file system, choose Elastic Throughput mode, and enable EFS Lifecycle Management to transition files to the Infrequent Access storage class after 30 days.
Store the videos in an Amazon S3 bucket with Transfer Acceleration and mount the bucket on the worker nodes by using an s3fs FUSE driver.
Provision an Amazon FSx for Windows File Server file system with provisioned IOPS and enable data deduplication.
Attach multiple gp3 Amazon EBS volumes to each node, configure a RAID 0 array, and share the mount point through a self-managed NFS server.
Creating an Amazon EFS file system with Elastic Throughput mode satisfies all three requirements. EFS provides a serverless, POSIX-compliant NFS interface that can be mounted by many EKS pods. Elastic Throughput automatically scales read/write bandwidth up and down with workload spikes, so the team does not have to provision or manage capacity. Enabling EFS Lifecycle Management (or EFS Intelligent-Tiering) transitions files that have not been touched for a configurable period (for example, 30 days) to the Infrequent Access storage class, reducing storage cost by up to 92 percent while keeping data immediately available.
The other options do not meet all requirements: FSx for Windows is a SMB file system and does not optimize infrequent access; mounting an S3 bucket with FUSE is not fully POSIX-compliant or performance-optimized for this workload; RAID 0 on gp3 EBS volumes is not a shared file system and requires significant operational effort.
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