A company runs an application on Amazon EC2 instances across multiple Availability Zones in the same AWS Region. The EC2 instances share an Amazon Elastic File System (Amazon EFS) volume that is mounted on all the instances. The EFS volume stores a variety of files such as installation media, third-party files, interface files, and other one-time files. The company accesses some EFS files frequently and needs to retrieve the files quickly. The company accesses other files rarely. The EFS volume is multiple terabytes in size. The company needs to optimize storage costs for Amazon EFS. Which solution will meet these requirements with the LEAST effort?