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Method for establishing error encoding scheme and equipment for reducing data loss

An error correction coding and scheme technology, which is applied to the generation of response errors, the error detection of redundant codes, and the use of forward error control, which can solve problems such as data loss.

Inactive Publication Date: 2010-11-03
GLOBALFOUNDRIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

data loss when errors cannot be corrected by rereading specific portions of the media in question

Method used

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  • Method for establishing error encoding scheme and equipment for reducing data loss
  • Method for establishing error encoding scheme and equipment for reducing data loss
  • Method for establishing error encoding scheme and equipment for reducing data loss

Examples

Experimental program
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Embodiment Construction

[0033] figure 1A system for gaining an understanding of embodiments of the invention is shown. The system comprises at least one storage unit 100 represented in this embodiment by a hard disk drive comprising at least one magnetic disk 101 as storage medium and a read / write head 102 . A read / write head 102 may be placed on a selected track of the at least one magnetic disk 101 . Binary data is stored on the magnetic disk 101 by selectively orienting the magnetism in selected data areas on the magnetic disk 101 using the read / write head 102 . The system also includes means 103 for reducing data loss. The at least one storage unit 100 is connected to a device 103 .

[0034] figure 2 show figure 1 The block diagram of the system is shown. The device 103 comprises a host interface 104 for connecting to a host (e.g. a computer system), a controller 105 for controlling the at least one storage unit 100, a computing engine 106 comprising an internal memory 107 and an external ...

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PUM

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Abstract

One embodiment disclosed is method for protecting data stored on at least one storage unit against uncorrectable media errors. The method includes associating a given redundancy set of at least one redundancy information sector (R) with a given data set of at least two data information sectors (D). The information content of the redundancy set is computed dependent on the information content of the data set. A storing operation stores the information content of the redundancy set consecutively with the information content of the data set forming a segment such that the redundancy set is placed logically in between a first part and a second part of the data set, and accessing at least one data information sector (D) in the data set by reading and / or writing the information content of the at least one data information sector (D) and at least one redundancy information sector (R) in the redundancy set with a single request.

Description

technical field [0001] The present invention relates to a method of creating an error correction coding scheme to reduce data loss. It also relates to methods, apparatus, computer program products and computer programs for reducing data loss. It also relates to a system for protecting data stored at at least one storage unit against uncorrectable media errors. Background technique [0002] The storage unit is eg based on at least one magnetic or optical disk or solid state memory as storage medium. As the storage capacity of a single storage unit increases, the probability of encountering at least one medium-dependent error when reading data stored on at least one storage medium of the storage unit also increases. Data is lost when errors cannot be corrected by re-reading certain portions of the medium. By storing redundant data distributed to two or more storage units, the reliability of a system comprising the two or more storage units can be increased. Such a system i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/10
CPCH04L1/004
Inventor A·多拉基亚胡晓宇I·伊利亚迪斯E·S·埃莱夫特里乌
Owner GLOBALFOUNDRIES INC
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