native nvme windows server 2025

Native NVMe in Windows Server 2025 represents a significant storage-platform change, replacing decades-old SCSI emulation with an opt-in kernel-level I/O stack rewrite for NVMe devices. Microsoft's lab numbers show up to 80% higher 4K random IOPS and roughly 45% fewer CPU cycles per I/O on targeted microbenchmarks. This feature is enabled via a cumulative update plus a registry or Group Policy switch, requires the in-box Windows NVMe driver, and is designed to unlock the parallelism and low latency of modern flash and NVMe-over-fabric hardware. The tag covers discussions around enabling, configuring, and benchmarking native NVMe support in Windows Server 2025.