Amazon Elastic File System  provides simple, scalable, elastic file storage for use with AWS Cloud services and on-premises resources. This gives customer ability to mount file and share file system between servers

  • Amazon EFS is a fully-managed service that makes it easy to set up and scalable file storage.
  • Use Case – Big Data and analytics, media processing workflows, content management, web serving, and home directories.
  • Scale from gigabytes to petabytes of data.

Exam Tips:

  • Tens, hundreds, or even thousands of Amazon EC2 instances can access an Amazon EFS file system at the same time.
  • Differences  – EFS vs EBS vs S3
    • Amazon EFS is a file storage service for use with Amazon EC2(sharing file location across multiple applications like inbound/outbound area).
    • Amazon EBS is a block level storage service for use within Single EC2 also EFS has more throughput than EBS
    • EFS has more latency than EBS.
    • S3 is an object storage service available through an Internet API that can be accessed anywhere(media files,streaming files,backups).
  • EFS can be mounted on more than 1 EC2 instance.
  • On-premises servers can mount your file systems via an AWS Direct Connect connection to your VPC.
  • You can access your Amazon EFS file system concurrently from servers in your on-premises datacenter as well as Amazon EC2 instances concurrently.
  • EFS File Sync copies files and directories into Amazon EFS from on-prem , 5X faster than standard copy from Linux – File Sync agent is required.
  • Data encryption in transit uses industry standard Transport Layer Security (TLS).
  • You can mount the Amazon EFS file system from these targets:
    1. Amazon EC2 instances in the same VPC
    2. EC2 instances in a VPC connected by VPC peering
    3. On-premises servers by using AWS Direct Connect
    4. On-premises servers over an AWS virtual private network (VPN) by using Amazon VPC

Practice:

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