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Hard disk failure handling method, array controller and hard disk

A controller and hard disk technology, applied in the storage field, can solve problems such as affecting the performance of solid-state hard disks and increasing wear and tear of solid-state hard disks

Active Publication Date: 2022-07-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of redundant space will lead to increased wear of SSDs, which will affect the performance of SSDs

Method used

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  • Hard disk failure handling method, array controller and hard disk
  • Hard disk failure handling method, array controller and hard disk
  • Hard disk failure handling method, array controller and hard disk

Examples

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Embodiment Construction

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

[0050] like figure 1 As shown, it is a structural diagram of the memory array 100 . The storage array 100 includes an array controller 101 , a plurality of hard disks 105 - 108 , a memory 103 , a communication interface 104 , and a bus 102 . The array controller 101 is used for running programs (not shown) in the memory 103 to manage the hard disks 105-108 and access data therein. The communication interface 104 is used to connect to a host (not shown), and the host can transmit read and write commands or management commands to the storage array 100 through the communication interface 104 . The communication interface may be a non-volatil...

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PUM

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Abstract

Embodiments of the present invention provide a method for handling a hard disk failure. The method is performed by an array controller of the storage array. The storage array includes a plurality of hard disks, each hard disk is divided into a plurality of storage blocks, and the plurality of storage blocks located in different hard disks form a storage block group through a redundancy algorithm. The method includes: acquiring fault information of a faulty area in the first hard disk; when the fault information indicates that data is lost in the faulty area, determining a faulty storage block where the lost data is located; using the faulty storage block Other storage blocks in the belonging storage block group restore the data of the faulty storage block; store the recovered data in the recovery storage block, and the recovery storage block is located in the second hard disk, and the second hard disk A hard disk other than the hard disk where the storage block group is located; record the correspondence between the address of the data in the faulty storage block in the first hard disk and the address of the recovered data block in the second hard disk.

Description

technical field [0001] The present invention relates to the field of storage technology, and in particular, to a processing method after a storage area in a hard disk fails, an array controller and a hard disk for executing the processing method. Background technique [0002] Since SSDs cannot be written in place, they can only be written off-site, so a part of redundant space must be reserved in the SSD as a space for data writing of the SSD to improve the performance of the SSD. The nominal capacity provided by the SSD does not include the capacity of the redundant space. [0003] When a partial area failure occurs in the SSD (for example, die failure, hereinafter referred to as the fault area), in order to keep the nominal capacity not reduced, the fault area needs to be compensated by the capacity of the redundant space, which will lead to redundant The capacity of the free space is reduced. The reduction in redundant space can lead to increased wear and tear on the SS...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14
CPCG06F11/1489G06F11/14G06F11/2094G06F11/1088G06F11/1076G06F11/1423G06F11/1428G06F11/1612G06F11/1658G11B20/1879G11B20/1883
Inventor 刘国霞吴黎明
Owner HUAWEI TECH CO LTD
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