DiskSpd

Free plan

What the maker publishes

Builds

The 2.3 binary release contains amd64 and arm64 builds. source

Downloads

The releases page provides precompiled ZIP binaries and source code. source

Founded

2024 source

Founded

1975 source

Founded

2008 source

Founded

2020 source

Free plan

Yes source

Headquarters

Redmond, Washington, USA source

I/O modes

DiskSpd 2.3 adds BypassIO modes for partial bypass and required full bypass. source

Latest release

DiskSpd 2.3 adds an IoRing I/O path with registered buffers and configurable submission batching. source

License

The repository uses the MIT License, which grants permission to use, copy, modify, distribute, sublicense, and sell copies of the software subject to its conditions. source

Processor controls

DiskSpd 2.3 adds topology-aware affinity controls, including physical-core assignment and P-core/E-core ordering. source

Profiles

XML profiles and results support the new I/O, affinity, buffer, and completion settings. source

Purpose

DiskSpd is a storage load generator and performance test tool from Microsoft engineering teams. source

Related framework

The repository includes VM Fleet, a framework for exploring storage capabilities in Windows Server Hyper-Converged environments with Storage Spaces Direct. source

Reporting

Results can report processor names and cache topology in text and XML formats. source

Requirements

The minimum supported operating system is Windows 10 version 1803; IoRing and BypassIO require Windows 11 or later, and BypassIO also requires NTFS. source

Security reporting

Microsoft asks researchers to report security vulnerabilities through the Microsoft Security Response Center rather than public GitHub issues. source

Support

The repository directs users to GitHub Issues to report DiskSpd problems. source

Checked against the maker's pages on 28 Sept 2026.