The program is a disk benchmark software, designed to quickly test the performance of your hard drives. Currently, the program allows to measure sequential and random read/write speeds.
DiskSpd is a storage performance tool from the Windows, Windows Server and Cloud Server Infrastructure engineering teams at Microsoft. Please visit https://github.com/Microsoft/diskspd/wiki for updated documentation.
The freeware stress test tool HeavyLoad was developed to bring your PC to its limits and benchmark the performance under heavy load. It can be installed on any edition of Windows and client/server versions (32-bit and 64-bit) currently supported by Micros