EFS - Elastic File System¶

• Managed [[NFS (network file system)]] that can be mounted on many AWS EC2
• EFS works with EC2 instances in multi-AZ
• Highly available, scalable, expensive (3xGP2 (SSD)), pay per use
• Use cases:
  • Content management
  • Web serving
  • Data sharing
  • Wordpress
• Uses [[NFSv4.1]] protocol
• Uses Security Group to control access to EFS
• Compatible with Linux based AMI (not Windows)
• Performance mode:
  • General purpose (default)
  • MAX I/O - used when thousands of AWS EC2 are using the Elastic File System (EFS)
• EFS file sync to sync from on-premise file system to EFS
• Backup EFS-to-EFS (incremental - can choose frequency)
• Encryption at rest using AWS KMS (Key Management Service)