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Data verification method, array controller and hard disk

An array controller and data verification technology, which is applied in the storage field, can solve the problems that data cannot be verified, and data reliability cannot be guaranteed, so as to avoid verification errors, improve usability, and improve consistency and reliability. Effect

Active Publication Date: 2019-02-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a data verification method, an array controller and a hard disk, which can solve the problem that the hard disk cannot verify the data in the data format that it does not support, and can only store these data directly, and the reliability of the data cannot be guaranteed. question

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  • Data verification method, array controller and hard disk
  • Data verification method, array controller and hard disk
  • Data verification method, array controller and hard disk

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Embodiment Construction

[0086] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0087] The embodiment of the present invention is applicable to the scene where the hard disk in the hard disk array verifies the data read and written by the host when the host accesses the data in the hard disk array. Such as figure 1 As shown, it is a schematic diagram of an applicable system architecture of the embodiment of the present invention. figure 1 Among them, the host computer 11 is connected with the array controller 12, and the host computer 11 can carry out data transmission between the interface card and ...

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Abstract

The embodiment of the invention discloses a data verification method, an array controller and a hard disk. The method comprises the following steps: array control receives I / O request; Determining a data format of the target data accessed by the I / O request; Determining a format identification corresponding to the data format according to the data format; Adding format identifiers to I / O requests;Sending the I / O request with the added format identification to the hard disk so that the hard disk checks the target data according to the format identification; After receiving the input and outputI / O request sent by the array controller, the hard disk determines the data checking mode of the target data according to the format identification. The target data is verified according to the determined data verification method. The embodiment of the invention can solve the problem that the hard disk cannot verify the data having the data format which is not supported by the hard disk, can onlydirectly store the data, and cannot guarantee the reliability of the data.

Description

technical field [0001] The technical field of storage of the present invention relates in particular to a method for verifying data, an array controller and a hard disk. Background technique [0002] Generally, in order to ensure the consistency and reliability of data read and written by the host, the hard disk needs to verify the data read and written by the host. [0003] Usually, there are 8 bytes of data protection bits at the end of the data, which are used to store data protection information (ProtectInformation, PI). PI can be cyclic redundancy check (Cyclical Redundancy Check, CRC) information, after the receiving host transmits data to the hard disk by writing Input and Output (I / O), or the sending host reads from the hard disk by reading I / O. Before fetching data, the hard disk can use CRC information to verify the data written or read by the host. [0004] Because of the different data verification methods, different data formats, that is, different PI formats,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/10
CPCG06F11/1004
Inventor 张箭杨雁军曹忠虔杨龙
Owner HUAWEI TECH CO LTD
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