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Data writing method, flash memory devices and storage equipment

A technology for data writing and storage devices, applied in the storage field, can solve problems such as large fluctuations in SSD performance and loss of memory data, and achieve the effects of improving performance, reducing performance fluctuations, and reducing costs

Active Publication Date: 2018-04-13
CHENGDU HUAWEI TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a data writing method, a flash memory device and a storage device, which can solve the problem that the performance of the SSD fluctuates greatly and some data in the memory is lost in some scenarios

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  • Data writing method, flash memory devices and storage equipment

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Embodiment Construction

[0036] The terms "first", "second" and "third" in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to limit a specific order.

[0037] In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

[0038] SSD is widely used in servers, desktops, notebooks, mobile devices, game consoles, etc.

[0039] Flash memory, also known as flash memory (Flash), replaces disks and becomes the first choice for mainstream storage devices with its advantages of high data storage sp...

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Abstract

The embodiment of the application discloses a data writing method, flash memory devices and storage equipment, and relates to the field of storage technology. The data writing method, the flash memorydevices and the storage equipment can solve the problem of higher costs caused by larger SSD performance fluctuation or higher design complexity of storage equipment. The data writing method is applied to the flash memory devices. One of the flash memory devices includes a first physical storage space used for storing data written when the storage equipment is in a power-off phase. A specific scheme includes: receiving a first data writing request by the flash memory device when the storage equipment is in the power-off phase, wherein the first data writing request is used for requesting of writing first target data at a first logical block address (LBA); in response to the first data writing request, determining a first PBA, which corresponds to the first LBA, by the flash memory deviceaccording to a first preset address mapping relationship, wherein the first PBA belongs to the first physical storage space, and the first PBA does not store data; and writing the first target data into the first PBA by the flash memory device.

Description

technical field [0001] The embodiments of the present application relate to the field of storage technologies, and in particular, to a data writing method, a flash memory device, and a storage device. Background technique [0002] In a storage system, most storage devices have a power-failure protection function. The power-down protection function means that when the normal power supply fails, the backup power supply is used to supply power for the processor, memory and Solid State Disk (SSD), so that the data in the memory can be copied to the SSD. The higher the performance of the SSD, the shorter the time for data copying, and the smaller the battery capacity required for backup power. [0003] Currently, the storage device logically divides the SSD into two logical disks, SSD 1 and SSD 2. SSD 1 is mainly used to write data in the normal power supply phase, SSD 2 is mainly used to write data in the power-off phase, and SSD 1 and SSD 2 are mainly used to write data in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02G06F12/10
CPCG06F12/0246G06F12/0253G06F12/10
Inventor 张洪岽
Owner CHENGDU HUAWEI TECH
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