Microsoft Unlocks Native NVMe Support In Windows Server 2025

Microsoft has announced a major storage innovation with the release of native NVMe (Non-Volatile Memory Express) support in Windows Server 2025. This marks a significant architectural shift, replacing the traditional SCSI-based stack with a direct NVMe path, unlocking dramatic performance improvements for enterprise workloads.  

Key highlights from the announcement include  

• Native NVMe support delivers up to 80% higher IOPS and a 45% reduction in CPU usage compared to SCSI translation.  
• The feature was introduced in the October 2025 cumulative update (KB5066835) but requires manual activation via Registry or Group Policy.  
• NVMe’s multi-queue architecture allows tens of thousands of commands to be processed simultaneously, far surpassing SCSI’s single-queue limitations.  
• Testing shows Windows Server 2025 can achieve up to 3.3 million IOPS on PCIe Gen5 NVMe SSDs, with potential to exceed 10 million IOPS using advanced host bus adapters.  
• The update enables enterprises to maximize existing hardware investments without purchasing new servers, improving density for SQL Server, Hyper-V, and AI-driven workloads.  
• Microsoft describes the release as a “storage revolution,” positioning Windows Server 2025 as a competitive platform against Linux, which has long offered native NVMe support.  
• The feature is disabled by default to ensure stability during rollout, requiring administrators to enable it manually.  

This development represents a milestone in Microsoft’s server evolution, aligning with modern hardware capabilities and enterprise demands for high-performance, scalable storage. By removing translation overhead and latency, Windows Server 2025 now offers a direct, lock-free path to NVMe devices, optimized for multi-core CPUs and solid-state storage.  

Industry experts view this as a critical advancement for organizations running data-intensive applications, from cloud services to AI workloads. With NVMe now natively supported, Windows Server 2025 is positioned to deliver unprecedented efficiency and performance, reinforcing Microsoft’s commitment to enterprise innovation.  

Sources: WinBuzzer, TechRadar Pro, Guru3D, Microsoft Community Hub, TechPowerUp