A company runs an application on a group of Amazon Linux EC2 instances. For compliance reasons, the company must retain all application log files for 7 years. T...

A company runs an application on a group of Amazon Linux EC2 instances. For compliance reasons, the company must retain all application log files for 7 years.
The log files will be analyzed by a reporting tool that must access all files concurrently.
Which storage solution meets these requirements MOST cost-effectively?