IOMeter is another open-source synthetic benchmarking tool which is able to simulate the various loads placed on a hard drive and solid-state drive technology.
We test with both random read and write 4K tests, as shown above. There are many ways to measure the IOPS performance of a hard drive, so our results will sometimes differ from the manufacturer’s quoted ratings. We do test all drives in exactly the same way, so the results are directly comparable.
As with the CrystalDiskMark 4K tests, the drive seemed to struggle in our 4K random read/write tests particularly when it came to writes. It was slower than the last large capacity Toshiba drive we looked at, the 14TB N300 NAS, by quite some margin when it came to write performance.