You have been asked to design the storage layer for an application. The application requires disk
performance of at least 100,000 IOPS. In addition, the storage layer must be able to survive the
loss of an individual disk, EC2 instance, or Availability Zone without any data loss.
The volume you provide must have a capacity of at least 3 TB.
Which of the following designs will meet these objectives?

A.
Instantiate a c3 8xlarge instance in us-east-1.
Provision 4x1TB EBS volumes, attach them to the instance, and configure them as a single RAID
5 volume.
Ensure that EBS snapshots are performed every 15 minutes.

B.
Instantiate a c3 8xlarge instance in us-east-1.
Provision 3xlTB EBS volumes, attach them to the Instance, and configure them as a single RAID
0 volume.
Ensure that EBS snapshots are performed every 15 minutes.

C.
Instantiate an 12 8xlarge instance in us-east-1a.
Create a RAID 0 volume using the four 800GB SSD ephemeral disks provided with the instance.
Provision 3x1TB EBS volumes, attach them to the instance, and configure them as a second
RAID 0 volume.
Configure synchronous, block-level replication from the ephemeral-backed volume to the EBSbacked volume.

D.
Instantiate a c3 8xlarge instance in us-east-1.
Provision an AWS Storage Gateway and configure it for 3 TB of storage and 100,000 IOPS.
Attach the volume to the instance.

E.
Instantiate an 12 8xlarge instance in us-east-1a.
Create a RAID 0 volume using the four 800GB SSD ephemeral disks provided with the instance.
Configure synchronous, block-level replication to an identically configured instance in us-east-1b.

Explanation:
It doesn’t protect against a loss of two EC2 instances or two AZs, but the question asks about
protection of ONE disk, EC2 instance or AZ loss.
https://acloud.guru/course/aws-certified-solutions-architect-associate/discuss/-
KJdi4tFMp2x_O88J6U4/an-architecture-design-question