EFS — Complete Guide
EFS — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of AWS Cloud Tutorial on Toolliyo Academy.
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AWS Cloud Tutorial · Lesson 33 of 100
EFS
Core services → Projects
Core services · 1 — AWS basics · ~6 min · AWS — Storage & Databases
What is this?
Amazon EFS is elastic NFS file storage that scales automatically. Multiple EC2 or ECS tasks mount the same file system concurrently.
Why should you care?
AwsVerse CMS and shared config files need a POSIX mount across many container tasks.
See it live — copy this example
Run in AWS CloudShell / local AWS CLI v2, or follow the matching steps in the AWS Console (Free Tier).
aws efs create-file-system \
--performance-mode generalPurpose \
--throughput-mode bursting \
--encrypted \
--tags Key=Name,Value=awsverse-shared-configWhat happened?
- Creates an encrypted EFS file system.
- Add mount targets in each AZ subnet; mount with NFS client on EC2 or ECS volume.
Practice next
- Create EFS and mount targets in two subnets.
- On EC2: sudo mount -t nfs4 fs-id.efs.ap-south-1.amazonaws.com:/ /mnt/efs.
- Write file from one instance; read from another.
- Switch to elastic throughput mode for spiky writes.
- Enable EFS Lifecycle Management to IA.
Remember
EFS = shared NFS storage. Scales with usage. Use for shared content not DB data.
AwsVerse shared uploads
Five API pods need same image cache.
Outcome: EFS mount eliminates stale per-node disk copies.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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