Hi Blase,
Look into Bright Technologies https://www.4bright.com. They have the software tools you’re looking for.
They have been qualify storage configurations for streaming media since post went digital. Over the years they have worked with suppliers like Dothill, Xyratex, Infortrend, Nexsan, plus others. Their software can simulate applications thread counts, buffer size, fps, file layout, etc. for real world testing and verification.
Cheers!