Step-by-Step Explanation:

Understand the Problem:

The EC2 instance processes large data files and uses a 1 TB General Purpose SSD (gp2) EBS volume.

CloudWatch metrics show consistent high VolumeReadOps.

The requirement is to improve I/O performance while ensuring data integrity.

Analyze the Requirements:

Improve I/O performance.

Maintain data integrity.

Evaluate the Options:

Option A: Change the instance type to a large, burstable, general-purpose instance.

Burstable instances provide a baseline level of CPU performance with the ability to burst to a higher level when needed. However, this does not address the I/O performance directly.

Option B: Change the instance type to an extra-large general-purpose instance.

A larger instance type might improve performance, but it does not directly address the I/O performance of the EBS volume.

Option C: Increase the EBS volume to a 2 TB General Purpose SSD (gp2) volume.

Increasing the size of a General Purpose SSD (gp2) volume can increase its IOPS. The larger the volume, the higher the baseline performance in terms of IOPS.

Option D: Move the data that resides on the EBS volume to the instance store.

Instance store volumes provide high I/O performance but are ephemeral, meaning data will be lost if the instance is stopped or terminated. This does not ensure data integrity.

Select the Best Solution:

Option C: Increasing the EBS volume size to 2 TB will provide higher IOPS, improving I/O performance while maintaining data integrity.

Amazon EBS Volume Types

General Purpose SSD (gp2) Volumes

Increasing the size of the General Purpose SSD (gp2) volume is an effective way to improve I/O performance while ensuring data integrity remains intact.