Western Digital RE RAID Edition 4TB SATA Enterprise Drive - Full Review
Yapt (yet another performance test) is a benchmark recommended 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.
YAPT is not a 4K aligned test, and it wreaks a bit of havoc with Advanced Format HDDs. This causes most drives to have difficulty on the random access tests. Outside of those results, we saw the RE really take off in the random writes. It sat just below the VelociRaptor in our sequential testing.