Just to address the core of your comment, 20 magnetic disks would combine for about ~2,000 IOPS of capacity, provide for no redundancy, and allow only one machine to process the entirety of the queries coming in to power the application.

Even a full 60 disk server filled with magnetic disks would provide less I/O capacity for running a relational database than a single EBS volume.

It's might not look like a lot of data if you're talking about storing media files, but it's quite a bit of relational data to be queried in single-digit milliseconds at-scale.