AWS Solutions Architect Associate (SAA-C02)
Elastic Compute Cloud (EC2)
Elastic File System (EFS)¶
- AWS managed Network File System (NFS)
- Can be mounted to multiple EC2 instances across AZs
- Pay per use (no capacity provisioning)
- Auto scaling (up to PBs)
- Compatible with Linux based AMIs (POSIX file system)
- Uses security group to control access to EFS
- Lifecycle management feature to move files to EFS-IA after N days
Performance Mode¶
- General Purpose (default)
- latency-sensitive use cases (web server, CMS, etc.)
- Max I/O
- higher latency & throughput (big data, media processing)
Throughput Mode¶
- Bursting (default)
- Throughput: 50MB/s per TB
- Burst of up to 100MB/s.
- Provisioned
- Fixed throughput (provisioned)
Storage Tiers¶
- Standard - for frequently accessed files
- Infrequent access (EFS-IA) - cost to retrieve files, lower price to store
Security¶
- EFS Security Groups to control network traffic
- POSIX Permissions to control access from hosts by IAM User or Group
Last updated: 2022-05-19