Elastic File System (EFS)

Question 1

What protocol Elastic File Service is based on or extends on?

Answer 1

Network File System

Question 2

What payment model it follows

Answer 2

You way for what you use. No need to provision.
$EFS > 3 * $EBS
$EFS > 20 * $S3

Question 3

Explain relationship with Availability Zones

Answer 3

EFS ca span across multiple AZ. Provides redundancy, resiliency across multiple AZ.

Question 4

What ways you can configure mount-points geographically wise.

Answer 4

1. Configure “mount-points” in one or multiple Availability Zones
2. mount point can be mounted from on-premises systems. (fast and stable connection, like Direct-Connect, EFS is not secured)

Question 5

What is alternative to mounting EFS mount point from on premises system?

Answer 5

Use Amazon DataSync service. It syncs on premises data over internet or direct connect with S3 or EFS. It does it securely. Supports EFS to EFS sync.