AWS-EFS

• Storage Type - Object storage

• Scalable - Highly Scalable Managed Service. Supports up to 7000 file system operations per second. It provides elasticity–scales up and down automatically, even to meet the most abrupt workload spikes

• Data stored in AWS EFS stays in the region. Replicas are made within the region

• Data Access - Can be accessed by 1 to 1000s of EC2 instances from multiple AZs, concurrently

• File System - File storage service for use with AWS EC2. EFS can be used as network file system for on-premise servers too using AWS Direct Connect

• Encryption - Uses an AWS KMS–Managed Customer Master Key (CMK) and AES 256-bit Encryption standards

• Availability - Highly available (No public SLA)

• Durability - Highly durable (No public SLA)

• Availability Zone Failure: Every file system object is redundantly stored across multiple Availability Zones so it can survive one AZ failure.

• Storage Size - No limitation on the size of the file system

• File Size Limitation - Single files have a maximum size of 47.9TiB

• Data Throughput and I/O - Default throughput of 3GB/s for all connected client

• It provides data encryption in transit or at rest.

• EFS is a fully-managed service that makes it easy to set up, scale & cost-optimize file storage in the Amazon Cloud.

• EFS file systems can automatically scale from gigabytes to petabytes of data without needing to provision storage.

• EFS offers a Standard and an Infrequent Access storage class.

• Files smaller than 128 KiB are not eligible for Lifecycle Management and will always be stored on EFS Standard.

• Users can use AWS Backup to schedule automatic, incremental backups of their Amazon EFS file systems.

• EFS Provisioned Throughput is available for applications with a high throughput to storage (MB/s per TB) ratio.

• EFS offers the ability to encrypt data at rest and in transit.

• To access EFS from on-premises, users must have an AWS Direct Connect or AWS VPN connection between their on-premises datacenter and VPC.

• EFS is integrated with a number of other AWS services, including CloudWatch, CloudFormation, CloudTrail, IAM, & AWS Tagging services.

• Users can mount an Amazon EFS file system in VPC, through the Network File System versions 4.0 and 4.1 (NFSv4) protocol.

When to use:

• Throughput scale - When performance need Multiple GB per sec.

• Data availability - stored redundantly in a multiple AZ.

• Multiple EC2 instance.

• Big data and analytics, Media, Content management