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Screenshot of higher IOPS when running Native NVMe stack on Windows Server 2025.
Windows Server News and Best Practices
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Announcing Native NVMe in Windows Server 2025: Ushering in a New Era of Storage Performance

Yash_Shekar's avatar
Yash_Shekar
Icon for Microsoft rankMicrosoft
Dec 15, 2025

Native NVMe support in Windows Server 2025 is a leap forward in storage innovation that will redefine what’s possible for your most demanding workloads. Enable Native NVMe today using a registry key after applying October’s latest cumulative update for WS2025!

We’re thrilled to announce the arrival of Native NVMe support in Windows Server 2025—a leap forward in storage innovation that will redefine what’s possible for your most demanding workloads. Modern ...
Updated Jan 05, 2026
Version 2.0
NVME SSD
storage
windows server
Elden_Christensen's avatar
Elden_Christensen
Icon for Microsoft rankMicrosoft
Jan 05, 2026

Which Deduplication solution are you using?   The newer ReFS Dedup or the older Data Dedup? 

Hans Odink's avatar
Hans Odink
Copper Contributor
Jan 05, 2026

I suppose it is the older Data Dedup, because it was enabled on a the server when it was an older version (I suppose enabled on W2019).
Is it possible to determine it? And can it be converted?

  • Yash_Shekar's avatar
    Yash_Shekar
    Icon for Microsoft rankMicrosoft
    Jan 08, 2026

    Hi Hans Odink​, would you mind sending more detailed repro steps and any stop codes or screenshots that might be relevant to nativenvme@microsoft.com? We would love to investigate further. Thanks!

    • Hans Odink's avatar
      Hans Odink
      Copper Contributor
      Jan 11, 2026

      I rolled back to get my homelab stable again. Next week I hope to upgrade the hardware in my homelab. After I have moved the crucial servers to the new server, I can test again. If you want to perform specific tests, please let me know. Also which logging would be helpfull. Happy to support a stable product!