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Storage device and random read-write method thereof

A technology for storage devices and reading and writing methods, applied in the directions of memory address/allocation/relocation, input/output to record carrier, etc., which can solve the problem that it is difficult to increase the number of read and write operations

Inactive Publication Date: 2009-06-03
HUAWEI DIGITAL TECH (CHENGDU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the research process, the inventor found that the above-mentioned SSD performs read and write operations at least in the following disadvantages: since the read and write operations performed by the SSD belong to serial operations, it is difficult to increase the number of read and write operations per second (IOPS, I / O per second)

Method used

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  • Storage device and random read-write method thereof
  • Storage device and random read-write method thereof
  • Storage device and random read-write method thereof

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Embodiment Construction

[0019] In order to make the above features and advantages of the embodiments of the present invention more obvious and understandable, the embodiments of the present invention will be described in detail below in conjunction with specific implementation modes.

[0020] Please refer to figure 1 , is a flow chart of the method of the embodiment of the present invention, including the following steps:

[0021] Step 101: receiving a command;

[0022] Step 102: According to the command, perform data transmission with the dual-port cache through the first port of the dual-port cache, and control the dual-port cache to communicate with the flash chip or flash memory through the second port of the dual-port cache Flash chip array for data transfer.

[0023] next to figure 1 The steps shown are described in detail. Please refer to figure 2 , the specific method flow for performing the read operation in the embodiment of the present invention Figure 1 , can include the following...

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Abstract

The embodiment of the invention discloses a storage device and a random read-write method thereof. The method disclosed by the embodiment comprises the following steps: receiving a command; performing data transmission with a dual-port cache by a first port of the dual-port cache according to the command, and controlling the dual-port cache to perform the data transmission with a flash memory chip or a flash memory chip array by a second port of the dual-port cache. The embodiment of the invention can improve the read-write operation frequency per second.

Description

technical field [0001] The invention relates to the technical field of storage devices, in particular to a storage device and a random read-write method thereof. Background technique [0002] A solid state disk (SSD, Solid State Disk), as a storage device, may include a control unit, a storage unit, and a cache (Cache). The storage unit is mostly composed of a non-volatile flash memory (Flash) chip. [0003] When the SSD performs a read operation, it parses the received read command, then reads the corresponding data from the corresponding Flash chip, caches the read data in the Cache, and then transmits the read data to the host from the Cache. When the SSD performs a write operation, it parses the received write command, then caches the received data in the Cache, and then writes the data cached in the Cache to the corresponding Flash chip. [0004] In the research process, the inventor found that the above-mentioned SSD performs read and write operations at least in the...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F12/08
Inventor 张宗全
Owner HUAWEI DIGITAL TECH (CHENGDU) CO LTD