Jump to content

NVM Express

From Wikipedia, the free encyclopedia
(Redirected from NVMe over Fabrics)
NVM Express
Non-Volatile Memory Host Controller Interface Specification
AbbreviationNVMe
StatusPublished
Year started2011; 13 years ago (2011)
Latest version2.1
August 5, 2024[1]
OrganizationNVM Express, Inc. (since 2014)
NVM Express Work Group (before 2014)
Websitenvmexpress.org

NVM Express (NVMe) or Non-Volatile Memory Host Controller Interface Specification (NVMHCIS) is an open, logical-device interface specification for accessing a computer's non-volatile storage media usually attached via the PCI Express bus. The initial NVM stands for non-volatile memory, which is often NAND flash memory that comes in several physical form factors, including solid-state drives (SSDs), PCIe add-in cards, and M.2 cards, the successor to mSATA cards. NVM Express, as a logical-device interface, has been designed to capitalize on the low latency and internal parallelism of solid-state storage devices.[2]

Architecturally, the logic for NVMe is physically stored within and executed by the NVMe controller chip that is physically co-located with the storage media, usually an SSD. Version changes for NVMe, e.g., 1.3 to 1.4, are incorporated within the storage media, and do not affect PCIe-compatible components such as motherboards and CPUs.[3]

By its design, NVM Express allows host hardware and software to fully exploit the levels of parallelism possible in modern SSDs. As a result, NVM Express reduces I/O overhead and brings various performance improvements relative to previous logical-device interfaces, including multiple long command queues, and reduced latency. The previous interface protocols like AHCI were developed for use with far slower hard disk drives (HDD) where a very lengthy delay (relative to CPU operations) exists between a request and data transfer, where data speeds are much slower than RAM speeds, and where disk rotation and seek time give rise to further optimization requirements.

NVM Express devices are chiefly available in the form of standard-sized PCI Express expansion cards[4] and as 2.5-inch form-factor devices that provide a four-lane PCI Express interface through the U.2 connector (formerly known as SFF-8639).[5][6] Storage devices using SATA Express and the M.2 specification which support NVM Express as the logical-device interface are a popular use-case for NVMe and have become the dominant form of solid-state storage for servers, desktops, and laptops alike.[7][8]

Specifications

[edit]

Specifications for NVMe released to date include:[9]

  • 1.0e (January 2013)
  • 1.1b (July 2014)
  • 1.2 (November 2014)
    • 1.2a (October 2015)
    • 1.2b (June 2016)
    • 1.2.1 (June 2016)
  • 1.3 (May 2017)
    • 1.3a (October 2017)
    • 1.3b (May 2018)
    • 1.3c (May 2018)
    • 1.3d (March 2019)
  • 1.4 (June 2019)
    • 1.4a (March 2020)
    • 1.4b (September 2020)
    • 1.4c (June 2021)
  • 2.0 (May 2021)[10]
    • 2.0a (July 2021)
    • 2.0b (January 2022)
    • 2.0c (October 2022)
    • 2.0d (January 2024)[11]
  • 2.1 (August 2024)[1]

Background

[edit]
Intel SSD 750 series, an SSD that uses NVM Express, in form of a PCI Express 3.0 ×4 expansion card (front and rear views)

Historically, most SSDs used buses such as SATA, SAS, or Fibre Channel for interfacing with the rest of a computer system. Since SSDs became available in mass markets, SATA has become the most typical way for connecting SSDs in personal computers; however, SATA was designed primarily for interfacing with mechanical hard disk drives (HDDs), and it became increasingly inadequate for SSDs, which improved in speed over time.[12] For example, within about five years of mass market mainstream adoption (2005–2010) many SSDs were already held back by the comparatively slow data rates available for hard drives—unlike hard disk drives, some SSDs are limited by the maximum throughput of SATA.

High-end SSDs had been made using the PCI Express bus before NVMe, but using non-standard specification interfaces, or by emulating a hardware RAID controller.[13] By standardizing the interface of SSDs, operating systems only need one common device driver to work with all SSDs adhering to the specification. It also means that each SSD manufacturer does not have to design specific interface drivers. This is similar to how USB mass storage devices are built to follow the USB mass-storage device class specification and work with all computers, with no per-device drivers needed.[14]

NVM Express devices are also used as the building block of the burst buffer storage in many leading supercomputers, such as Fugaku Supercomputer, Summit Supercomputer and Sierra Supercomputer, etc.[15][16]

History

[edit]

The first details of a new standard for accessing non-volatile memory emerged at the Intel Developer Forum 2007, when NVMHCI was shown as the host-side protocol of a proposed architectural design that had Open NAND Flash Interface Working Group (ONFI) on the memory (flash) chips side.[17] A NVMHCI working group led by Intel was formed that year. The NVMHCI 1.0 specification was completed in April 2008 and released on Intel's web site.[18][19][20]

Technical work on NVMe began in the second half of 2009.[21] The NVMe specifications were developed by the NVM Express Workgroup, which consists of more than 90 companies; Amber Huffman of Intel was the working group's chair. Version 1.0 of the specification was released on 1 March 2011,[22] while version 1.1 of the specification was released on 11 October 2012.[23] Major features added in version 1.1 are multi-path I/O (with namespace sharing) and arbitrary-length scatter-gather I/O. It is expected that future revisions will significantly enhance namespace management.[21] Because of its feature focus, NVMe 1.1 was initially called "Enterprise NVMHCI".[24] An update for the base NVMe specification, called version 1.0e, was released in January 2013.[25] In June 2011, a Promoter Group led by seven companies was formed.

The first commercially available NVMe chipsets were released by Integrated Device Technology (89HF16P04AG3 and 89HF32P08AG3) in August 2012.[26][27] The first NVMe drive, Samsung's XS1715 enterprise drive, was announced in July 2013; according to Samsung, this drive supported 3 GB/s read speeds, six times faster than their previous enterprise offerings.[28] The LSI SandForce SF3700 controller family, released in November 2013, also supports NVMe.[29][30] A Kingston HyperX "prosumer" product using this controller was showcased at the Consumer Electronics Show 2014 and promised similar performance.[31][32] In June 2014, Intel announced their first NVM Express products, the Intel SSD data center family that interfaces with the host through PCI Express bus, which includes the DC P3700 series, the DC P3600 series, and the DC P3500 series.[33] As of November 2014, NVMe drives are commercially available.

In March 2014, the group incorporated to become NVM Express, Inc., which as of November 2014 consists of more than 65 companies from across the industry. NVM Express specifications are owned and maintained by NVM Express, Inc., which also promotes industry awareness of NVM Express as an industry-wide standard. NVM Express, Inc. is directed by a thirteen-member board of directors selected from the Promoter Group, which includes Cisco, Dell, EMC, HGST, Intel, Micron, Microsoft, NetApp, Oracle, PMC, Samsung, SanDisk and Seagate.[34]

In September 2016, the CompactFlash Association announced that it would be releasing a new memory card specification, CFexpress, which uses NVMe.[citation needed]

NVMe Host Memory Buffer (HMB) feature added in version 1.2 of the NVMe specification.[35] HMB allows SSDs to utilize the host's DRAM, which can improve the I/O performance for DRAM-less SSDs.[36] For example, HMB can be used for cache the FTL table by the SSD controller, which can improve I/O performance.[37] NVMe 2.0 added optional Zoned Namespaces (ZNS) feature and Key-Value (KV) feature, and support for rotating media such as hard drives. ZNS and KV allows data to be mapped directly to its physical location in flash memory to directly access data on an SSD.[38] ZNS and KV can also decrease write amplification of flash media.

Form factors

[edit]

There are many form factors of NVMe solid-state drive, such as AIC, U.2, U.3, M.2 etc.

AIC (add-in card)

[edit]

Almost all early NVMe solid-state drives are HHHL (half height, half length) or FHHL (full height, half length) AIC, with a PCIe 2.0 or 3.0 interface. A HHHL NVMe solid-state drive card is easy to insert into a PCIe slot of a server.

SATA Express, U.2 and U.3 (SFF-8639)

[edit]
Main article: SATA Express

SATA Express allows the use of two PCI Express 2.0 or 3.0 lanes and two SATA 3.0 (6 Gbit/s) ports through the same host-side SATA Express connector (but not both at the same time). SATA Express supports NVMe as the logical device interface for attached PCI Express storage devices. It is electrically compatible with MultiLink SAS, so a backplane can support both at the same time.

Main article: U.2

U.2, formerly known as SFF-8639, uses the same physical port as SATA Express but allows up to four PCI Express lanes. Available servers can combine up to 48 U.2 NVMe solid-state drives.[39]

U.3 (SFF-TA-1001) is built on the U.2 spec and uses the same SFF-8639 connector. Unlike in U.2, a single "tri-mode" (PCIe/SATA/SAS) backplane receptacle can handle all three types of connections; the controller automatically detects the type of connection used. This is unlike U.2, where users need to use separate controllers for SATA/SAS and NVMe. U.3 devices are required to be backwards-compatible with U.2 hosts. U.2 devices can be used with U.3 hosts.[40]

M.2

[edit]
Main article: M.2

M.2, formerly known as the Next Generation Form Factor (NGFF), uses a M.2 NVMe solid-state drive computer bus. Interfaces provided through the M.2 connector are PCI Express 3.0 or higher (up to four lanes).

EDSFF

[edit]
Main article: Enterprise and Data Center Standard Form Factor

NVMe-oF

[edit]

NVM Express over Fabrics (NVMe-oF) is the concept of using a transport protocol over a network to connect remote NVMe devices, contrary to regular NVMe where physical NVMe devices are connected to a PCIe bus either directly or over a PCIe switch to a PCIe bus. In August 2017, a standard for using NVMe over Fibre Channel (FC) was submitted by the standards organization International Committee for Information Technology Standards (ICITS), and this combination is often referred to as FC-NVMe or sometimes NVMe/FC.[41]

As of May 2021, supported NVMe transport protocols are:

The standard for NVMe over Fabrics was published by NVM Express, Inc. in 2016.[46][47]

The following software implements the NVMe-oF protocol:

Comparison with AHCI

[edit]

The Advanced Host Controller Interface (AHCI) has the benefit of wide software compatibility, but has the downside of not delivering optimal performance when used with SSDs connected via the PCI Express bus. As a logical-device interface, AHCI was developed when the purpose of a host bus adapter (HBA) in a system was to connect the CPU/memory subsystem with a much slower storage subsystem based on rotating magnetic media. As a result, AHCI introduces certain inefficiencies when used with SSD devices, which behave much more like RAM than like spinning media.[7]

The NVMe device interface has been designed from the ground up, capitalizing on the lower latency and parallelism of PCI Express SSDs, and complementing the parallelism of contemporary CPUs, platforms and applications. At a high level, the basic advantages of NVMe over AHCI relate to its ability to exploit parallelism in host hardware and software, manifested by the differences in command queue depths, efficiency of interrupt processing, the number of uncacheable register accesses, etc., resulting in various performance improvements.[7][57]: 17–18 

The table below summarizes high-level differences between the NVMe and AHCI logical-device interfaces.

High-level comparison of AHCI and NVMe[7]
  AHCI NVMe
Maximum queue depth One command queue;
Up to 32 commands per queue		 Up to 65535 queues;[58]
Up to 65536 commands per queue
Uncacheable register accesses
(2000 cycles each) 		Up to six per non-queued command;
Up to nine per queued command		 Up to two per command
Interrupt A single interrupt Up to 2048 MSI-X interrupts
Parallelism
and multiple threads 		Requires synchronization lock
to issue a command		 No locking
Efficiency
for 4 KB commands 		Command parameters require
two serialized host DRAM fetches		 Gets command parameters
in one 64-byte fetch
Data transmission Usually half-duplex Full-duplex
Host Memory Buffer (HMB) No Yes

Operating system support

[edit]
The position of NVMe data paths and multiple internal queues within various layers of the Linux kernel's storage stack[59]
ChromeOS
On February 24, 2015, support for booting from NVM Express devices was added to ChromeOS.[60][61]
DragonFly BSD
The first release of DragonFly BSD with NVMe support is version 4.6.[62]
FreeBSD
Intel sponsored a NVM Express driver for FreeBSD's head and stable/9 branches.[63][64] The nvd(4) and nvme(4) drivers are included in the GENERIC kernel configuration by default since FreeBSD version 10.2 in 2015.[65]
Genode
Support for consumer-grade NVMe was added to the Genode framework as part of the 18.05[66] release.
Haiku
Haiku gained support for NVMe on April 18, 2019.[67][68]
illumos
illumos received support for NVMe on October 15, 2014.[69]
iOS
With the release of the iPhone 6S and 6S Plus, Apple introduced the first mobile deployment of NVMe over PCIe in smartphones.[70] Apple followed these releases with the release of the first-generation iPad Pro and first-generation iPhone SE that also use NVMe over PCIe.[71]
Linux
Intel published an NVM Express driver for Linux on 3 March 2011,[72][73][74] which was merged into the Linux kernel mainline on 18 January 2012 and released as part of version 3.3 of the Linux kernel on 19 March 2012.[75] Linux kernel supports NVMe Host Memory Buffer[76] from version 4.13.1[77] with default maximum size 128 MB.[78] Linux kernel supports NVMe Zoned Namespaces start from version 5.9.
macOS
Apple introduced software support for NVM Express in Yosemite 10.10.3. The NVMe hardware interface was introduced in the 2016 MacBook and MacBook Pro.[79]
NetBSD
NetBSD added support for NVMe in NetBSD 8.0.[80] The implementation is derived from OpenBSD 6.0.
OpenBSD
Development work required to support NVMe in OpenBSD has been started in April 2014 by a senior developer formerly responsible for USB 2.0 and AHCI support.[81] Support for NVMe has been enabled in the OpenBSD 6.0 release.[82]
OS/2
Arca Noae provides an NVMe driver for ArcaOS, as of April, 2021. The driver requires advanced interrupts as provided by the ACPI PSD running in advanced interrupt mode (mode 2), thus requiring the SMP kernel, as well.[83]
Solaris
Solaris received support for NVMe in Oracle Solaris 11.2.[84]
VMware
Intel has provided an NVMe driver for VMware,[85] which is included in vSphere 6.0 and later builds, supporting various NVMe devices.[86] As of vSphere 6 update 1, VMware's VSAN software-defined storage subsystem also supports NVMe devices.[87]
Windows
Microsoft added native support for NVMe to Windows 8.1 and Windows Server 2012 R2.[57][88] Native drivers for Windows 7 and Windows Server 2008 R2 have been added in updates.[89] Many vendors have released their own Windows drivers for their devices as well. There are also manually customized installer files available to install a specific vendor's driver to any NVMe card, such as using a Samsung NVMe driver with a non-Samsung NVMe device, which may be needed for additional features, performance, and stability.[90]
Support for NVMe HMB was added in Windows 10 Anniversary Update (Version 1607) in 2016.[35] In Microsoft Windows from Windows 10 1607 to Windows 11 23H2, the maximum HMB size is 64 MB. Windows 11 24H2 updates the maximum HMB size to 1/64 of system RAM.[91]
Support for NVMe ZNS and KV was added in Windows 10 version 21H2 and Windows 11 in 2021.[92] The OpenFabrics Alliance maintains an open-source NVMe Windows Driver for Windows 7/8/8.1 and Windows Server 2008R2/2012/2012R2, developed from the baseline code submitted by several promoter companies in the NVMe workgroup, specifically IDT, Intel, and LSI.[93] The current release is 1.5 from December 2016.[94]

Software support

[edit]
QEMU
NVMe is supported by QEMU since version 1.6 released on August 15, 2013.[95] NVMe devices presented to QEMU guests can be either real or emulated.
UEFI
An open source NVMe driver for UEFI is available on SourceForge.[96]

Management tools

[edit]
nvme-cli on Linux

nvmecontrol

[edit]

The nvmecontrol tool is used to control an NVMe disk from the command line on FreeBSD. It was added in FreeBSD 9.2.[97]

nvme-cli

[edit]

NVM-Express user space tooling for Linux.[98]

See also

[edit]

References

[edit]
  1. ^ a b "NVM Express® Base Specification, Revision 2.1" (PDF). nvmexpress.org. NVM Express, Inc. August 5, 2024. Retrieved 2024-08-10.
  2. ^ "NVM Express". NVM Express, Inc. Retrieved 2017-01-24. NVMe is designed from the ground up to deliver high bandwidth and low latency storage access for current and future NVM technologies.
  3. ^ Tallis, Billy (June 14, 2019). "NVMe 1.4 Specification Published: Further Optimizing Performance and Reliability". AnandTech. Archived from the original on 2021-01-27.
  4. ^ Drew Riley (2014-08-13). "Intel SSD DC P3700 800GB and 1.6TB Review: The Future of Storage". Tom's Hardware. Retrieved 2014-11-21.
  5. ^ "Intel Solid-State Drive DC P3600 Series" (PDF). Intel. 2015. pp. 18, 20–22. Archived from the original (PDF) on Oct 28, 2015. Retrieved 2015-04-11.
  6. ^ Paul Alcorn (2015-06-05). "SFFWG Renames PCIe SSD SFF-8639 Connector To U.2". Tom's Hardware. Retrieved 2015-06-09.
  7. ^ a b c d Dave Landsman (2013-08-09). "AHCI and NVMe as Interfaces for SATA Express Devices – Overview" (PDF). SATA-IO. Retrieved 2013-10-02.
  8. ^ Paul Wassenberg (2013-06-25). "SATA Express: PCIe Client Storage" (PDF). SATA-IO. Archived from the original (PDF) on 2013-10-04. Retrieved 2014-11-21.
  9. ^ NVMe Specifications
  10. ^ "NVM Express Announces the Rearchitected NVMe 2.0 Library of Specifications" (Press release). Beaverton, Oregon, USA: NVM Express, Inc. June 3, 2021. Retrieved 2024-03-31.
  11. ^ "NVM Express Base Specification 2.0d" (PDF). nvmexpress.org. NVM Express, Inc. January 11, 2024. Retrieved 2024-03-26.
  12. ^ Walker, Don H. "A Comparison of NVMe and AHCI" (PDF). 31 July 2012. SATA-IO. Archived from the original (PDF) on 12 February 2019. Retrieved 3 July 2013.
  13. ^ "ASUS ROG RAIDR Express 240GB PCIe SSD Review". 6 December 2013.
  14. ^ "NVM Express Explained" (PDF). nvmexpress.org. 9 April 2014. Retrieved 21 March 2015.
  15. ^ "Using LC's Sierra Systems". hpc.llnl.gov. Retrieved 2020-06-25.
  16. ^ "SummitDev User Guide". olcf.ornl.gov. Archived from the original on 2020-08-06. Retrieved 2020-06-25.
  17. ^ "Speeding up Flash... in a flash". The Inquirer. 2007-10-13. Archived from the original on September 18, 2009. Retrieved 2014-01-11.
  18. ^ "Extending the NVMHCI Standard to Enterprise" (PDF). Santa Clara, CA USA: Flash Memory Summit. August 2009. Archived from the original (PDF) on 2017-06-17.
  19. ^ "Flash new standard tips up". The Inquirer. 2008-04-16. Archived from the original on January 11, 2014. Retrieved 2014-01-11.
  20. ^ Amber Huffman (August 2008). "NVMHCI: The Optimized Interface for Caches and SSDs" (PDF). Santa Clara, CA USA: Flash Memory Summit.
  21. ^ a b Peter Onufryk (2013). "What's New in NVMe 1.1 and Future Directions" (PDF). Santa Clara, CA USA: Flash Memory Summit.
  22. ^ "New Promoter Group Formed to Advance NVM Express" (PDF). Press release. June 1, 2011. Retrieved September 18, 2013.
  23. ^ Amber Huffman, ed. (October 11, 2012). "NVM Express Revision 1.1" (PDF). Specification. Retrieved September 18, 2013.
  24. ^ David A. Deming (2013-06-08). "PCIe-based Storage" (PDF). snia.org. Archived from the original (PDF) on 2013-09-20. Retrieved 2014-01-12.
  25. ^ Amber Huffman, ed. (January 23, 2013). "NVM Express Revision 1.0e" (PDF). Specification. Retrieved September 18, 2013.
  26. ^ "IDT releases two NVMe PCI-Express SSD controllers". The Inquirer. 2012-08-21. Archived from the original on August 24, 2012. Retrieved 2014-01-11.
  27. ^ "IDT Shows Off The First NVMe PCIe SSD Processor and Reference Design - FMS 2012 Update". The SSD Review. 2012-08-24. Retrieved 2014-01-11.
  28. ^ "Samsung Announces Industry's First 2.5-inch NVMe SSD | StorageReview.com - Storage Reviews". StorageReview.com. 2013-07-18. Archived from the original on 2014-01-10. Retrieved 2014-01-11.
  29. ^ "LSI SF3700 SandForce Flash Controller Line Unveiled | StorageReview.com - Storage Reviews". StorageReview.com. 2013-11-18. Archived from the original on 2014-01-11. Retrieved 2014-01-11.
  30. ^ "LSI Introduces Blazing Fast SF3700 Series SSD Controller, Supports Both PCIe and SATA 6 Gbps". hothardware.com. Archived from the original on 5 March 2016. Retrieved 21 March 2015.
  31. ^ Jane McEntegart (7 January 2014). "Kingston Unveils First PCIe SSD: 1800 MB/s Read Speeds". Tom's Hardware. Retrieved 21 March 2015.
  32. ^ "Kingston HyperX Predator PCI Express SSD Unveiled With LSI SandForce SF3700 PCIe Flash Controller". hothardware.com. Archived from the original on 28 May 2016. Retrieved 21 March 2015.
  33. ^ "Intel® Solid-State Drive Data Center Family for PCIe*". Intel. Retrieved 21 March 2015.
  34. ^ "NVM Express Organization History". NVM Express. Archived from the original on 23 November 2015. Retrieved 23 December 2015.
  35. ^ a b Tallis, Billy (June 14, 2018). "The Toshiba RC100 SSD Review: Tiny Drive In A Big Market". AnandTech. Retrieved 2024-03-30.
  36. ^ Kim, Kyusik; Kim, Taeseok (2020). "HMB in DRAM-less NVMe SSDS: Their usage and effects on performance". PLOS ONE. 15 (3): e0229645. Bibcode:2020PLoSO..1529645K. doi:10.1371/journal.pone.0229645. PMC 7051071. PMID 32119705.
  37. ^ Kim, Kyusik; Kim, Seongmin; Kim, Taeseok (2020-06-24). "HMB-I/O: Fast Track for Handling Urgent I/Os in Nonvolatile Memory Express Solid-State Drives". Applied Sciences. 10 (12): 4341. doi:10.3390/app10124341. ISSN 2076-3417.
  38. ^ "NVMe Gets Refactored". 30 June 2021.
  39. ^ "All-Flash NVME Servers for Advanced Computing Supermicro". Supermicro. Retrieved 2022-07-22.
  40. ^ Author, Guest (6 March 2020). "Evolving Storage with SFF-TA-1001 (U.3) Universal Drive Bays". StorageReview.com. Devices that are U.3-based are required to be backwards-compatible with U.2 hosts. [...] Enables U.2- (SFF-8639 Module) or U.3- (SFF-TA-1001) compliant drives to be used in the same storage architecture. {{cite web}}: |last1= has generic name (help)
  41. ^ a b "NVMe over Fibre Channel (NVMe over FC) or FC-NVMe standard". Tech Target. January 1, 2018. Retrieved May 26, 2021.
  42. ^ "FC-NVMe rev 1.14 (T11/16-020vB)" (PDF). INCITS. April 19, 2017. Archived from the original (PDF) on April 10, 2022. Retrieved May 26, 2021.
  43. ^ "NVMe-oF Specification". NVMexpress. 15 April 2020. Retrieved May 26, 2021.
  44. ^ "Supplement to InfiniBandTMArchitecture Specification Volume 1 Release 1.2.1". Infiniband. September 2, 2014. Archived from the original on March 9, 2016. Retrieved May 26, 2021.
  45. ^ "What is NVMe-oF?". Storage Review. June 27, 2020. Retrieved May 26, 2021.
  46. ^ "NVM Express over Fabrics Revision 1.0" (PDF). NVM Express, Inc. 5 June 2016.
  47. ^ Woolf, David (February 9, 2018). "What NVMe over Fabrics Means for Data Storage".
  48. ^ Hellwig, Christoph (July 17, 2016). "NVMe Over Fabrics Support in Linux" (PDF).
  49. ^ Petros Koutoupis (June 10, 2019). "Data in a Flash, Part III: NVMe over Fabrics Using TCP". Linux Journal. Retrieved May 26, 2021.
  50. ^ Stern, Jonathan (7 June 2016). "Announcing the SPDK NVMf Target".
  51. ^ "SPDKNVMe-oFRDMA (Target & Initiator) Performance Report" (PDF). SPDK. February 1, 2021. Retrieved May 26, 2021.
  52. ^ "SPDKNVMe-oFTCP (Target & Initiator) Performance Report" (PDF). SPDK. February 1, 2020. Retrieved May 26, 2021.
  53. ^ "Hands On with StarWind NVMe-oF Initiator for Windows". StorageReview. October 6, 2021. Retrieved October 6, 2021.
  54. ^ "StarWind SAN & NAS over Fibre Channel". StorageReview. July 20, 2022. Retrieved July 20, 2022.
  55. ^ "Intel planning big Lightbits NVMe/TCP storage push". Blocks & Files. June 9, 2022. Retrieved June 9, 2022.
  56. ^ "LightBits Super SSD brings NVMe on vanilla Ethernet". ComputerWeekly. April 29, 2021. Retrieved April 29, 2021.
  57. ^ a b Andy Herron (2013). "Advancements in Storage and File Systems in Windows 8.1" (PDF). snia.org. Archived from the original (PDF) on 2014-01-10. Retrieved 2014-01-11.
  58. ^ Amber Huffman (March 9, 2020). "NVM Express Base Specification Revision 1.4a" (PDF). Specification. section 1.4 Theory of Operation, p. 7. Retrieved May 16, 2020.
  59. ^ Werner Fischer; Georg Schönberger (2015-06-01). "Linux Storage Stack Diagram". Thomas-Krenn.AG. Retrieved 2015-06-08.
  60. ^ "ChromeOS adds boot support for NVM Express". NVM Express. 24 February 2015. Retrieved 21 March 2015.
  61. ^ Akers, Jason B. (Jan 22, 2015). "4f503189f7339c667b045ab80a949964ecbaf93e - chromiumos/platform/depthcharge". Git at Google. Retrieved 21 March 2015.
  62. ^ "release46". DragonFly BSD. Retrieved 2016-09-08.
  63. ^ "Log of /head/sys/dev/nvme". FreeBSD source tree. The FreeBSD Project. Retrieved 16 October 2012.
  64. ^ "Log of /stable/9/sys/dev/nvme". FreeBSD source tree. The FreeBSD Project. Retrieved 3 July 2013.
  65. ^ "FreeBSD 10.2-RELEASE Release Notes". The FreeBSD Project. Retrieved 5 August 2015.
  66. ^ "Release notes for the Genode OS Framework 18.05". genode.org.
  67. ^ "#9910 NVMe devices support". dev.haiku-os.org. Retrieved 2019-04-18.
  68. ^ "NVMe Driver Now Available - Haiku Project". www.haiku-os.org. Retrieved 2016-07-28.
  69. ^ "4053 Add NVME Driver Support to Illumos". github.com. Retrieved 2016-05-23.
  70. ^ Ho, Joshua (September 28, 2015). "iPhone 6s and iPhone 6s Plus Preliminary Results". AnandTech. Retrieved 2016-06-01.
  71. ^ Chester, Brandon (May 16, 2016). "The iPhone SE Review". AnandTech.
  72. ^ Matthew Wilcox (2011-03-03). "NVM Express driver". LWN.net. Archived from the original on 2012-07-17. Retrieved 2013-11-05.
  73. ^ Keith Busch (2013-08-12). "Linux NVMe Driver" (PDF). flashmemorysummit.com. Retrieved 2013-11-05.
  74. ^ "IDF13 Hands-on Lab: Compiling the NVM Express Linux Open Source Driver and SSD Linux Benchmarks and Optimizations" (PDF). activeevents.com. 2013. Archived from the original (PDF) on 2014-01-11. Retrieved 2014-01-11.
  75. ^ "Merge git://git.infradead.org/users/willy/linux-nvme". kernel.org. 2012-01-18. Retrieved 2013-11-05.
  76. ^ Kim, K.; Kim, T. (2020). "HMB in DRAM-less NVMe SSDs: Their usage and effects on performance". PLOS ONE. 15 (3): e0229645. Bibcode:2020PLoSO..1529645K. doi:10.1371/journal.pone.0229645. PMC 7051071. PMID 32119705.
  77. ^ "Linux 4.13 has been released on Sun, 3 Sep 2017".
  78. ^ "Pci.c « host « nvme « drivers - kernel/Git/Stable/Linux.git - Linux kernel stable tree".
  79. ^ "Faster 'NVM Express' SSD Interface Arrives on Retina MacBook and OS X 10.10.3". macrumors.com. 11 April 2015. Retrieved 11 April 2015.
  80. ^ "nvme -- Non-Volatile Memory Host Controller Interface". NetBSD manual pages. 2021-05-16. Retrieved 2021-05-16.
  81. ^ David Gwynne (2014-04-16). "non volatile memory express controller (/sys/dev/ic/nvme.c)". BSD Cross Reference. Retrieved 2014-04-27.
  82. ^ David Gwynne (2016-04-14). "man 4 nvme". OpenBSD man page. Retrieved 2016-08-07.
  83. ^ "NVME". Arca Noae wiki. Arca Noae, LLC. 2021-04-03. Retrieved 2021-06-08.
  84. ^ "nvme(7D)". Oracle. Retrieved 2014-12-02.
  85. ^ "Intel Solid-State for NVMe Drivers". intel.com. 2015-09-25. Retrieved 2016-03-17.
  86. ^ "VMware Compatibility Guide for NVMe devices". vmware.com. Retrieved 2016-03-17.
  87. ^ "VSAN Now Supporting NVMe Devices". vmware.com. 2015-11-11. Retrieved 2016-03-17.
  88. ^ "Windows 8.1 to support hybrid disks and adds native NVMe driver". Myce.com. 2013-09-06. Retrieved 2014-01-11.
  89. ^ "Update to support NVM Express by using native drivers in Windows 7 or Windows Server 2008 R2". Microsoft. 2014-11-13. Retrieved 2014-11-17.
  90. ^ "Recommended AHCI/RAID and NVMe Drivers". 10 May 2013. Archived from the original on 24 February 2021. Retrieved 19 February 2021.
  91. ^ https://nvmexpress.org/wp-content/uploads/03_Lee_Windows-Windows-Driver_Final.pdf
  92. ^ lorihollasch (2023-08-09). "NVMe Feature and Extended Capability Support - Windows drivers". learn.microsoft.com. Retrieved 2024-04-11.
  93. ^ "Windows NVM Express". Project web site. Archived from the original on June 12, 2013. Retrieved September 18, 2013.
  94. ^ "Nvmewin - Revision 157: /Releases". Archived from the original on 2017-05-10. Retrieved 2016-08-13.
  95. ^ "ChangeLog/1.6". qemu.org. Retrieved 21 March 2015.
  96. ^ "Download EDK II from". SourceForge.net. Retrieved 2014-01-11.
  97. ^ "NVM Express control utility". The FreeBSD Project. 2018-03-12. Retrieved 2019-07-12.
  98. ^ "GitHub - linux-nvme/nvme-cli: NVMe management command line interface". linux-nvme. 2019-03-26. Retrieved 2019-03-27.
[edit]
Wikimedia Commons has media related to NVM Express.
Retrieved from "https://en.wikipedia.org/w/index.php?title=NVM_Express&oldid=1258108551#NVMe-oF"