Blackmagic Disk Speed Test Alternatives

CrystalDiskMark is a small HDD benchmark utility for your hard drive that enable you to rapidly measure sequential and random read/write speeds.

HD Tune is a hard disk / SSD utility with many functions. It can be used to measure the drive's performance, scan for errors, check the health status (S.M.A.R.T.), securely erase all data and more!.

UserBenchmark is a free all-in-one benchmarking application. Benchmark your CPU, GPU, SSD, HDD and USB Drives then compare results with other users and see which parts you can upgrade together with the expected performance improvements. CPU benchmarks bias toward Intel.

With AS SSD Benchmark you can determine your SSD drive's performance by conducting several specific tests.

Measures both sustained and burst data transfer rates of your hard disks, cd/dvd-roms, flash cards/sticks, floppys, etc. Realtime graphical display.

Measuring storage performance (SSD, HDD, USB Flash etc.) and RAM speed across Windows, macOS, Linux and Android devices.

Aja System Test is an application included with all KONA cards which lets you tune your system to the same high standards that developers do for the best performance.

fio is an I/O tool meant for both for benchmark and stress/hardware verification. It has support for many different types of I/O engines, I/O priorities (on newer Linux kernels), rate limited I/O, forked or threaded jobs and much more.

Vdbench is a disk and tape I/O workload generator for verifying data integrity and measuring performance of direct attached and network connected storage on Windows, Solaris, Linux, AIX, OS/X and HP/UX.

As the Iometer Users Guide says, Iometer is an I/O subsystem measurement and characterization tool for single and clustered systems.