Amazon EFS (Elastic File System)
- Fully managed storage service that can be mounted on multiple EC2 instances across multiple AZs.
- Highly available, scalable, and more expensive (~3Ć gp2 cost).
- Pay-per-use with automatic scaling, no capacity planning required.
- POSIX-compliant, works like a standard Linux file system API.
- Uses NFS (v4.1) protocol
Key points:
- Accessible only from Linux-based AMIs (not Windows).
- Iām Encryption at rest with AWS KMS.
- Access controlled via Security Groups.
- Multi-AZ design makes it ideal for shared, concurrent access.
Use cases:
- Content management systems.
- Web serving (e.g., WordPress).
- Shared data and collaborative workloads.
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Amazon EFS ā Performance & Storage ClassesAmazon EBS vs Amazon EFSAmazon EFS ā Mount Targets