EFS
Amazon Elastic File System (EFS) 筆記。
Overview
彈性檔案系統
- Managed NFS (Network File System) that can be mounted on 100s of EC2
- Works with Linux EC2 instances in multi-AZ
- Highly available, scalable, expensive (3x gp2), pay per use
- No capacity planning required

Infrequent Access (EFS-IA)
不常存取
- Storage class cost-optimized for files not accessed every day
- Up to 92% lower cost compared to EFS Standard
- EFS automatically moves files to EFS-IA based on last access time
- Enable with a Lifecycle Policy
- Example: Move files not accessed for 60 days to EFS-IA
- Transparent to applications accessing EFS
