Alternatives to DiskSpd
Microsoft's command-line storage load generator for benchmarking disk performance on Windows. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
DiskSpd
Microsoft's command-line storage load generator for benchmarking disk performance on Windows.
Replacements
Listings that take over the same core job as DiskSpd.
fio
A flexible command-line I/O tester for benchmarking and stress-testing storage devices.
fio is a GPL-2.0 command-line I/O tester for Linux with job files and many I/O engines, reporting throughput, latency and IOPS in detail.
CrystalDiskMark
The standard Windows disk benchmark, measuring sequential and random read and write speeds in a few clicks.
CrystalDiskMark is also MIT-licensed and Windows only, but uses a graphical interface with preset sequential and random tests instead of configurable scripted workloads.
KDiskMark
A graphical disk benchmark for Linux that runs fio tests and shows easy-to-read results.
KDiskMark brings a graphical benchmark to Linux on top of fio, with configurable block size, queues and threads, but it is Linux only.
ATTO Disk Benchmark
A free benchmark from ATTO Technology for measuring storage read and write performance.
ATTO Disk Benchmark is a free proprietary Windows tool for quick read and write speed tests, without DiskSpd's configurable workloads or XML output.
AS SSD Benchmark
Quick Windows benchmark tool for testing SSD read and write speeds.
AS SSD Benchmark is a free Windows tool focused on quick SSD speed tests with no installation, offering a much narrower feature set than DiskSpd.
Similar software
Related functionality, not a direct replacement.
GNOME Disks
A graphical disk utility for GNOME that partitions, formats, benchmarks and images drives on Linux.
Samsung Magician
Samsung's management app for its consumer SSDs, covering firmware updates, health checks, benchmarks and secure erase.
HDDScan
A free Windows utility for testing hard drives and SSDs, reading SMART data and running surface tests.
f3
A command-line tool that tests flash drives and memory cards for fake capacity and real performance.