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Storage medium managing method and device in storage device and storage device

A storage medium and storage device technology, applied in the storage field, can solve problems such as performance degradation and SSDWAF increase

Inactive Publication Date: 2018-06-15
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present application provide a storage medium management method, device, and storage device in a storage device, so as to solve the problem of increasing WAF and performance degradation of the SSD due to the decrease in OP during the use of the SSD in the prior art. question

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  • Storage medium managing method and device in storage device and storage device
  • Storage medium managing method and device in storage device and storage device
  • Storage medium managing method and device in storage device and storage device

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Embodiment Construction

[0083] The following are the full names and Chinese explanations of the English abbreviations used in the embodiments of this application:

[0084] SSD: Solid State Drive, solid state drive;

[0085] P / E: Program / Erase, program / erase;

[0086] WAF: Write Amplification Factor, write amplification factor;

[0087] OP: Over Provisioning, redundant space / redundant area;

[0088] IOPS: Input / Output Operations Per Second, the number of read and write operations per second.

[0089] Before the SSD leaves the factory, the performance of each storage block of the SSD will be tested, and the storage blocks whose performance test reaches the standard value will be provided to the user for use, while the storage block whose performance test has not reached the standard value will be recorded as an invalid block. will no longer be used. In this way, during the use of the SSD, with the generation of invalid blocks in the SSD, the OP of the SSD will become smaller and smaller. like figur...

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Abstract

The invention discloses a storage medium managing method and device in a storage device and the storage device. The method comprises the steps of dividing a storage medium into a data storing area anda replacement area in advance according to the health degree; in the using process of the storage device, monitoring whether a problem memory block exists in the data storing area by the storage device; and when a problem memory block is detected, moving the problem memory block out of the data storing area, obtaining a replacing memory block from the replacement area and moving into the data storing area. The method has the advantages that the problem storage block is replaced with the replacing memory block in the replacement block in the replacement area which is divided in advance; the redundant area of the storage device is not needed to be reduced; the stability of the redundant area in the entire life cycle of the storage device is guaranteed; and the service life and the performance of the storage device are stabilized.

Description

technical field [0001] The present application relates to the technical field of storage, and more specifically, to a storage medium management method and device in a storage device and a storage device. Background technique [0002] SSD (Solid State Drive, solid state drive) is a data storage device composed of solid-state electronic storage devices, mainly composed of SSD Controller, RAM, and Flash storage units. The storage medium commonly used in SSDs at present is a non-volatile random access storage medium, NAND Flash, which is designed based on floating gate (Floating Gate) transistors, and charges are latched through the floating gate. [0003] However, when performing Program (program) / Erase (erase) operations on NAND Flash, the insulating layer of the floating gate transistor will be damaged to a certain extent, and the more frequent the operation, the easier it is to form UNC bad blocks. [0004] With more UNC bad blocks, the OP (Over Provisioning, redundant spac...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F12/12G06F3/0616G06F3/064G06F3/0679G11C29/765G11C29/52G06F2212/7204G06F12/0246G06F2212/7211G06F2212/1036G06F2212/1016G06F18/2193G06F18/24G06F3/0617G06F3/0673G06F3/06
Inventor 侯建岑唐鲲
Owner HUAWEI TECH CO LTD
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