EBS

Elastic File System (EFS) is file storage service for EC2 instances

• Storage capacity grows (up to petabytes) and shrinks automatically based on data stored (elastic)
• Multiple EC2 instances in the same VPC can mount a single EFS Volume (volume must be in the same VPC)
• EC2 instances install the NFSv4.1 client and can then mount the EFS volume
• EFS is using the Network File System version 4 (NFSv4) protocol
• EFS creates multiple mount targets in all your VPC subnets.
• You based per space used starting at $0.30 GB / month