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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 Dec 15, 2025
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NVME SSD
storage
windows server
Hans Odink's avatar
Hans Odink
Copper Contributor
Dec 21, 2025

I did enable it on my HomeLab server running Windows Server 2025 Datacenter, after the restart it was really quick also the VM's (running on (Hyper-V) where responding much better. Allthough after les then 15 minutes the VM's ran into BSOD, and would not boot succesfully.
Rolled back the change, and restored backups of the VM's. All running like it should. 
I suspect that it has something to doe with Data Deduplication which I have enabled on the NVMe disk where the VM's are stored.

jotheman03's avatar
jotheman03
Copper Contributor
Dec 21, 2025

Similar experience here.

It looked like it was working initially, but all my VM's broke down shortly after. All of them are/were corrupt.

95% was for testing, but still it's a bitter pill... I didn't have backups (Yep, that's my own choice, I know) so I had to do a UFO as they say in Dutch: Cry, Format, Start again (Uithuilen, Formatteren, Opnieuw beginnen).

In seriousness though: Microsoft, please oh please do not start turning this on on systems that have Deduplication enabled on NVMe drives!