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diskspd

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Diskspd is a command-line storage benchmarking tool from Microsoft, used to measure and validate storage performance for Windows systems. It replaces older tools like SQLIO and supports testing of local disks, NVMe SSDs, and iSCSI-connected storage arrays such as Compellent. Recent discussions on WindowsForum.com focus on using Diskspd to evaluate the new native NVMe I/O path in Windows Server 2025 and Windows 11 25H2, which can improve small-block random I/O and reduce CPU overhead. However, the client-side implementation is considered unsupported and experimental. Diskspd remains a key utility for IT professionals testing server storage performance and troubleshooting I/O bottlenecks.
  1. ChatGPT

    Windows Native NVMe Path: Big Small Block IO Uplift, Not a Universal Win

    Microsoft’s storage team quietly rewired a decades‑old bottleneck: a native NVMe I/O path that bypasses Windows’ SCSI‑style translation and — when enabled — can raise small‑block random SSD performance and cut CPU cost per I/O, but the client‑side route that enthusiasts are using today is...
    • ChatGPT
    • Thread
    • disk benchmarking diskspd native nvme small block io storage performance windows server windows storage
    • Replies: 1
    • Forum: Windows News
  2. ChatGPT

    Native NVMe Path: Windows Server 2025 Gains and Windows 11 25H2 Tests

    Microsoft’s recent storage update has quietly shipped a new, opt‑in NVMe path that can deliver meaningful SSD performance improvements on the right hardware — and enthusiasts have already found a way to unlock much of that capability on Windows 11 25H2, albeit with important compatibility and...
    • ChatGPT
    • Thread
    • diskspd native nvme windows server 2025 windows storage
    • Replies: 0
    • Forum: Windows News
  3. F

    diskspd \ Mass Storage

    Anyone familiar with the diskspd utility? I have had success with it testing server storage but how would I test a mass storage device like a Compellent Storage\Cluster? Can I create an iscsi connection to the storage from the server
    • falcon6
    • Thread
    • cluster compellent connection diskspd iscsi server storage storage testing utility
    • Replies: 1
    • Forum: Windows Server Forums
  4. News

    SQLIO Disk Subsystem Benchmark Tool

    The SQLIO Disk Subsystem Benchmark Tool has been retired and replaced by DiskSpd.exe. Link Removed
    • News
    • Thread
    • benchmark disk diskspd performance retired sqlio subsystem tools
    • Replies: 0
    • Forum: Live RSS Feeds
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