NAS storage system

A storage system and storage device technology, applied in the field of NAS storage systems, can solve problems such as a long development cycle of NAS storage, and achieve the effects of shortening the development cycle, reducing development difficulty, and avoiding incompatibility

Active Publication Date: 2017-12-12
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in actual situations, NAS storage devices and SAN storage networks are usually used at the same time. At this time, when developing the file system of the above-mentioned NAS ...

Method used

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Embodiment Construction

[0020] The core of the present invention is to provide a NAS storage system. In the prior art, NAS usually establishes a file system based on a storage device, and directly connects the file system to an external network to provide users with NAS services.

[0021] However, in actual situations, NAS storage devices and SAN storage networks are usually used at the same time, and the file system of the SAN storage network usually runs in the user state, while the file system in the NAS needs to run in the kernel state, and the user state and the kernel The user mode is equivalent to the two permission levels of the CPU. The user mode can only access the memory with limited access, while the kernel mode can access all data; on the other hand, the user mode is equivalent to the user space, which is the activity space allowed by the application program. , and the kernel state is equivalent to the kernel, which controls the hardware resources of the computer and provides a hardware ...

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Abstract

The invention discloses an NAS storage system. A storage device is connected with an external network through a virtual machine built in a physical node, namely, the virtual machine isolates a file system of the NAS storage device from the external network; the external network generally adopts an SAN storage network technology; an io stack of a design framework of the network is generally designed in a user state; a file system of an SAN storage network also can run in the user state; the file system in NAS needs to run in a kernel state; and the two file systems are incompatible. The storage device providing an NAS service is isolated from the external network through the virtual machine; and the virtual machine runs the file system of the NAS storage system, so that the problem that the two file systems are incompatible can be effectively avoided, the development difficulty can be lowered, and the development cycle can be shortened.

Description

technical field [0001] The invention relates to the field of network storage, in particular to a NAS storage system. Background technique [0002] With the continuous advancement of science and technology in recent years, network functions have become more and more powerful. In the file sharing business, when files need to be transmitted to the user's client through the network over a long distance, NAS (Network Attached Storage) is usually used to achieve the above business. [0003] NAS is a device that is connected to the network and has the function of data storage, so it is also called "network storage". It is a storage structure directly connected to the network and is a dedicated data storage server. NAS is data-centric, completely separates storage devices from servers, and centralizes data management. Since file locking on NAS storage devices is handled by the device itself, NAS can provide reliable file-level consolidation. [0004] Existing NAS usually establis...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F17/30
CPCG06F3/0604G06F3/0664G06F3/067G06F16/1827
Inventor 戚勇吕玉彬张会健
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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