The Operations team has observed degradation in IOPS performance for Amazon EBS volumes which are created from snapshots. As a Sysops administrator, you have been assigned to investigate the issue and propose a quick resolution without incurring additional cost.
Which of the following fix can be applied to resolve this issue?

Answer options:

A.Increase IOPS for the SSD volume by increasing volume size.
B.Use RAID 1 to maximize utilization of instance resources. 
C.Enable EBS optimization for an existing instance.
D.Force Initialization of the entire volume.

Correct Answer: D
There can be an initial performance hit when an Amazon EBS volume is created from snapshots. This can be avoided by either of the following.
Force the immediate initialization of the entire volume.
Enable fast snapshot to restore on a snapshot to ensure that the EBS volumes are fully initialized.
Option A is incorrect as increasing IOPS by increasing volume size will incur additional cost.
Option B is incorrect as Raid 1 will help redundancy; it will not resolve the initial performance hit observed with Amazon EBS volumes created from snapshots.
Option C is incorrect as using EBS optimized EC2 instance will have no impact on the performance of EBS volumes that are created from snapshots.
For more information on initializing Amazon EBS volumes, refer to the following URL,
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-initialize.html