A global digital enterprise is using Amazon EFS for storing data of a mission-critical application. Recently, the application has been facing performance issues with Amazon EFS. Management is seeking your advice to suggest options to optimize application performance.
Which of the following can be recommended to enhance application performance?

Answer options:

A.Use an application that does not use encryption in transit while communicating with Amazon EFS.
B.Parallelize applications across multiple Amazon EC2 instances.
C.Use EBS optimized Amazon EC2 instance for deploying applications.
D.Minimize the I/O size of the application which will lead to an increase in throughput.

Correct Answer: B
Amazon EFS can be accessed concurrently by multiple Amazon EC2 instances. Parallelizing application across multiple Amazon EC2 instances leads to access data from Amazon EFS together increasing throughput & in turn enhancing performance.
Option A is incorrect as disabling encryption in transit does not have any impact on Amazon EFS performance. There is very minimal impact on I/O latency & performance when encryption is enabled or disabled with Amazon EFS.
Option C is incorrect as applications need not be installed on EBS optimized Amazon EC2 instances to enhance performance with Amazon EFS. While considering Amazon EC2 instance for application using Amazon EFS, instance size should be selected based upon the resource requirement of the application.
Option D is incorrect as throughput for Amazon EFS increases when average I/O size increases, not decreases.
For more information on Amazon EFS Performance, refer to the following URL,
https://docs.aws.amazon.com/efs/latest/ug/performance-tips.html