NVMe (non-volatile memory express)

Non-volatile memory express, also known as NVMe or NVM Express, is an interface specification that aims to enable a solid-state drive (SSD) to make the most effective use of the high-speed Peripheral Component Interconnect Express (PCIe) bus in a computer.

Non-volatile memory express, also known as NVMe or NVM Express, is a specification that allows a solid-state drive (SSD) to make effective use of a high-speed Peripheral Component Interconnect Express (PCIe) bus in a computer.

NVMe operates at the host controller and defines a command set and feature set for PCIe-based SSDs with the goals of increased and efficient performance and interoperability on a broad range of enterprise and client systems. The main benefits of NVMe with PCIe-based SSDs are reduced latency, increased Input/Output operations per second (IOPS) and lower power consumption, in comparison to SAS-based or SATA-based SSDs, through the streamlining of the I/O stack.

The NVMe specification was defined by the Non-Volatile Memory Host Controller Interface (NVMHCI) Work Group, which has expanded to include more than 90 companies in the technology industry. The work group released the 1.0 NVMe specification on March 1, 2011 and the 1.1 specification on October 11, 2012. NVMe reference drivers are publicly available for a variety of operating systems, including Windows and Linux.

See also: non-volatile storage

This was first published in November 2013

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