New NVMe specifications for AI, cloud, enterprise and client applications
The NVM Express standardization group presents a new version of its NVMe standard. 2.3 mainly brings fine-tuning.
Modern SSD controllers work with the NVMe protocol in version 2.0 via PCI Express data connections, but the standard is constantly evolving. Following versions 2.1 last year and 2.2 in the spring, the standardization organization that gave it its name has now published the third sub-version of the 2.0 standard.
2.3 builds on version 2.0, which primarily introduced a modular structure for the various specifications. The standardization group has updated a total of eleven standards, the most important of which include changes to the power supply. The Power Limit Config allows the maximum power of an NVMe device to be controlled, which is particularly important for older systems with limited power. Self-reported Drive Power, on the other hand, allows the host to measure and monitor NVMe device performance and power consumption over the life of the device.
(Image:Â nvmexpress.org)
Partial reset possible
Using Sanitize Per Namespace, part of an NVMe storage device can now be reset to its delivery state. Previously, this was only possible for the entire SSD. Rapid Path Failure Recovery allows communication with the NVM subsystem via alternative channels and enables rapid recovery in the event of a loss of communication with a controller to avoid data corruption and duplication of outstanding commands. Configurable Device Personality simplifies inventory management by securely modifying the NVM subsystem.
Although work on the standard has been completed, it is unknown when controllers with the new functions will be available. Most of the new functions are only of interest for servers, but not for SSDs for desktop PCs and notebooks.
(Image:Â nvmexpress.org)
The members of the standardization group include AMD, Dell, Google, HPE, Intel, Meta, Microchip, Micron, Microsoft, Samsung, Seagate, Solidigm, and Western Digital. The specifications are available for download at nvmexpress.org.
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