A customer has a single 3-TB volume on-premises that is used to hold a large repository of
images and print layout files. This repository is growing at 500 GB a year and must be
presented as a single logical volume. The customer is becoming increasingly constrained with
their local storage capacity and wants an off-site backup of this data, while maintaining lowlatency access to their frequently accessed data.
Which AWS Storage Gateway configuration meets the customer requirements?

A.
Gateway-Cached volumes with snapshots scheduled to Amazon S3

B.
Gateway-Stored volumes with snapshots scheduled to Amazon S3

C.
Gateway-Virtual Tape Library with snapshots to Amazon S3

D.
Gateway-Virtual Tape Library with snapshots to Amazon Glacier

Explanation:
http://docs.aws.amazon.com/storagegateway/latest/userguide/storage-gateway-cachedconcepts.html