Files
oam/knowledge base/cloud computing/aws/efs.md
2025-01-18 00:34:23 +01:00

61 lines
2.0 KiB
Markdown

# Elastic File System
Serverless file storage for sharing files without the need for provisioning or managing storage capacity and
performance.
1. [TL;DR](#tldr)
1. [Further readings](#further-readings)
1. [Sources](#sources)
## TL;DR
Built to scale on demand growing and shrinking automatically as files are added and removed.<br/>
Accessible across most types of AWS compute instances, including EC2, ECS, EKS, Lambda, and Fargate.
Supports the NFS v4.0 and v4.1 protocols.
Available file system types:
- _Regional_: redundant across **multiple** geographically separated AZs **within the same Region**.
- _One Zone_: data stored within a **single AZ**, with all the limits it implies.
Default modes:
- _General Purpose Performance_: ideal for latency-sensitive applications.<br/>
Examples: web-serving environments, content-management systems, home directories, and general file serving.
- _Elastic Throughput_: designed to scale throughput performance automatically to meet the needs of workloads' activity.
Provides file-system-access semantics like strong data consistency and file locking.<br/>
Supports controlling access to file systems through POSIX permissions.<br/>
Supports authentication, authorization, and encryption.
EFS supports encryption in transit and encryption at rest.<br/>
Encryption at rest is enabled when creating a file system. In such case, all data and metadata is encrypted.<br/>
Encryption in transit is enabled when mounting a file system. Client access via NFS to EFS is controlled by both IAM
policies and network security policies (i.e. security groups).
Windows-based EC2 instances are **not** supported.
## Further readings
- [Amazon Web Services]
### Sources
- [What is Amazon Elastic File System?]
<!--
Reference
═╬═Time══
-->
<!-- In-article sections -->
<!-- Knowledge base -->
[amazon web services]: README.md
<!-- Files -->
<!-- Upstream -->
[what is amazon elastic file system?]: https://docs.aws.amazon.com/efs/latest/ug/whatisefs.html
<!-- Others -->