# microsoft/diskspd

DISKSPD is a storage load generator / performance test tool from the Windows/Windows Server and Cloud Server Infrastructure Engineering teams

Repository: https://github.com/microsoft/diskspd
Canonical: https://ross.abutalabs.com/products/diskspd
Language: C++
License: MIT
License Family: permissive
Last push: 2026-05-18T17:47:17+00:00

## Health v2 (maintenance only)
Score: 60/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 83, release rhythm 8, longevity 100
- inputs: {"age_days": 4373, "days_push": 107, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1402, forks 236 (observed 2026-08-28T04:04:37.371042+00:00)

## What it is
DiskSpd is a command-line storage load generator and performance testing tool from Microsoft's Windows and Cloud Server Infrastructure engineering teams. It measures disk and storage system throughput and latency, and the repository also hosts measurement frameworks like VM Fleet for Storage Spaces Direct environments.

## Use cases
- benchmark disk iops and throughput on windows
- measure storage latency under load
- stress test ssd or san performance
- generate synthetic io workloads for storage testing
- evaluate storage spaces direct cluster performance
- compare disk performance before and after hardware changes

## When to choose
- you need a reliable, scriptable storage benchmark on Windows or Windows Server
- you want detailed latency histograms and CPU topology-aware results
- you are tuning Hyper-V or Storage Spaces Direct environments with VM Fleet

## When to avoid
- you need storage benchmarking on Linux or macOS
- you want a graphical benchmarking tool rather than a CLI
- you need application-level or file-system semantic benchmarks rather than raw IO

## Facets
- artifact type: cli-tool
- maturity: active
- function: benchmarking, developer-tools
- domain: performance, developer-tools, windows
- platform: windows, cli
- tags: storage-performance, load-generator, disk-benchmark, iops, microsoft

## Member repositories
- microsoft/diskspd (main) score 60

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:37.371042+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:38:59.398173+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/diskspd (fetched 2026-08-28T04:04:37.371042+00:00, sha 15c71e784ff7)
- Data as of 2026-08-30T08:39:29.467469+00:00.