Yapt (yet another performance test) is a benchmark recommended to me by a pair of drive manufacturers and was incredibly difficult to locate as it hasn’t been updated or used in quite some time. That doesn’t make it irrelevant by any means though, as the benchmark is quite useful. It creates a test file of about 100 MB in size and runs both random and sequential read and write tests with it while changing the data I/O size in the process. The results are a good look at overall drive performance.
While the random writes test shows the main critical point of RAID-0 arrays, the rest of our tests, including sequential writes, see a big boost when compared to a single hard drive. While sequential reads see an immediate gain across the entire I/O size spectrum, the random reads test scales based on the size of the block of data being moved; this is because while combined transfer rate scales with RAID-0 the random access time does not.