Key points

• EFS supplies managed NFS file storage whose performance and lifecycle behavior must fit the shared workload.

Best-known use cases

• D1.3, D2.3, and D3.2: operate or optimize the named shared NFS workload and its lifecycle behavior.

What candidates often confuse it with

• EFS provides managed NFS; FSx provides specific managed file-system families and EBS provides EC2 block storage.

Key takeaway

Choose EFS from protocol, client, concurrency, performance, and lifecycle requirements rather than the word shared.

Related services

• AWS Backup
• Amazon EBS
• Amazon FSx

Relevant exam tasks

• D1.3 — Task 1.3: Implement performance optimization strategies for compute, storage, and database resources.
• 1.3.1 — Optimize compute resources and remediate performance problems by using performance metrics, resource tags, and AWS tools.
• D2.3 — Task 2.3: Implement backup and restore strategies.
• 2.3.1 — Automate snapshots and backups for AWS resources (for example, EC2 instances, RDS DB instances, EBS volumes, S3 buckets, DynamoDB tables) by using AWS services (for example, AWS Backup).
• D3.2 — Task 3.2: Automate the management of existing resources.
• 3.2.1 — Use AWS services to automate operational processes (for example, Systems Manager).

Learn more

• SOA-C03 in-scope services
• SOA-C03 Domain 1