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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 i2.8xlarge 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 EBS-backed 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 i2.8xlarge instance in us-east-1a. Create a RAID 0 volume using the four 800GB SSD
ephemeral disks provided with the instance. Configure synchronous, blocklevel replication to an identically
configured instance in us-east-1b.

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