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- Scalable, elastic, Cloud-Native NFS File System
- Attach a single file system to multiple EC2 Instances
- Don’t worry about running out or managing disk space
- EFS is a file storage service for EC2 instances
- Storage capacity grows (upto petabytes) and shrinks automatically based on data stored (elastic)
- Multiple EC2 instances in same VPC can mount a single EFS Volume (Volume must be in same VPC)
- EC2 instances install the NFSv4.1 client and can then mount the EFS volume
- EFS is using Network File System version 4 (NFSv4) protocol
- EFS creates multiple mount targets in all your VPC subnets
- Pay only for the storage you use, starting at $0.30 GB / month
- You create a security group to control access to EFS
- Encryption at rest using KMS
- 1000s of concurrent NFS clients, 10 GB+ /s throughput
- Grow to petabyte scale storage
- Performance Mode
- General Purpose (Default) - latency sensitive use cases
- Max IO - higher latency, throughput, highly parallel
- Throughput Mode:
- Bursting - 1 TB storage = 50 MB/s + burst up to 100 MB/s
- Enhanced - Provides more flexibility and higher throughput levels for workloads with a range of performance requirements
- Provisioned - set your throughput regardless of storage size
- Elastic - scale throughput up and down based on workload. Useful for unpredictable workloads
- Standard
- Infrequent (EFS-IA)
- Archive
- Implement lifecycle policies to move files between tiers