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Method for accessing NVMe storage device and NVMe storage device

A storage device and device technology, applied in the storage field, can solve problems such as inability to expand and the limited number of NVMe storage devices

Active Publication Date: 2014-10-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, due to the limitation of the number of PCIe interfaces of the CPU, the number of NVMe storage devices connected to the CPU is limited and cannot be expanded.

Method used

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  • Method for accessing NVMe storage device and NVMe storage device

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] In existing storage technologies, the deployment methods of NVMe storage devices are as follows: figure 1 As shown, including: central processing unit CPU and NVMe storage device. The NVMe storage device includes a controller and a storage unit, and the controller and the storage unit are integrated and connected to the CPU through the PCIe interface of the CPU.

[0041] Since both the controller and the storage unit of the NVMe storage device have cer...

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PUM

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Abstract

The embodiment of the invention provides a method for accessing an NVMe storage device and the NVMe storage device. The aims of power supply and distribution, radiating, space and the like of the NVMe storage device are achieved. The method includes the steps that a control module receives accessing request information, in a PCIe protocol format, sent by a CPU, converts the accessing request information in the PCIe protocol format into accessing request information in a second protocol format and sends the accessing request information in the second protocol format to a storage module; the storage module converts the accessing request information in the second protocol format into accessing request information in a third protocol format and obtains an operational order and accessing address information of the CPU from the accessing request information in the third protocol format, and a storage unit in the storage module is accessed according to the operational order and the accessing address information of the CPU. The method is suitable for the technical field of storage.

Description

technical field [0001] The present invention relates to the field of storage technology, in particular to a method for accessing an NVMe storage device and the NVMe storage device. Background technique [0002] In the current network application scenario, high-speed peripheral component interconnection (English: Peripheral Component Interconnect express, referred to as: PCIe) is the latest bus and interface standard, which belongs to high-speed serial point-to-point dual-channel high-bandwidth transmission, which represents the next generation of input / Output I / O interface standard. [0003] PCIe solid-state storage devices (such as solid-state drives (English: Solid State Disk, referred to as: SSD)) refer to solid-state storage devices connected to the PCIe interface of the central processing unit (English: Central Processing Unit, referred to as: CPU), usually as The first-level cache and the second-level cache are used, and they are mixed with traditional hard disks to ...

Claims

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Application Information

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IPC IPC(8): G06F13/38G06F13/42
CPCG06F3/0661G06F13/4027G06F3/0607G06F3/0679
Inventor 郭海涛常胜余洲
Owner HUAWEI TECH CO LTD
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