EFS

• EFS provides hierarchical directory structure

• Can be used with both AWS and on-premises resources

• access the files concurrently by multiple EC2 instances

• Multiple compute instances, including EC2, ECS (both Fargate and EC2 nodes), and Lambda, can access an EFS file system at the same time

• EFS Storage Classes

  • Reduce storage cost by moving to different EFS storage classes

  • EFS will automatically and transparently move your files to the lower cost regional EFS Standard-IA or EFS One Zone-IA based on the last time they were accessed

  • Amazon EFS Intelligent-Tiering: moves the files between storage class

  • EFS Storage classes

    • EFS Standard-IA

    • EFS One Zone-IA

• Bursting Throughput mode:

  • It is the default mode, the amount of throughput scales as your file system grows, the more you store, the more throughput is available to you.

  • Does not incur any additional charges and you have a baseline rate of 50 KB/s per GB of throughput that comes included with the price you pay for your EFS standard storage.

• Provisioned Throughput mode

  • Allows you to burst above your allocated allowance, which is based upon your file system size, so if your file system was relatively small but the use case for your file system required a high throughput rate, then the default bursting throughput options may not be able to process your request quickly enough. In this instance, you would need to use provisioned throughput.

  • This option does incur additional charges where you will need to pay for any bursting above the default capacity allowed from the standard bursting throughput.