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CDP creating method and device

A device and dirty page technology, applied in the field of creating CDP, can solve the problems of high disk usage rate and affecting the reading and writing speed of normal business systems, so as to reduce the usage rate, ensure the rapid recovery of business, and realize the effect of disaster recovery

Inactive Publication Date: 2021-05-11
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional CDP method is to do CDP based on the disk. When copying data, the disk needs to be read, and the disk usage becomes high, which affects the read and write speed of the normal business system.

Method used

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  • CDP creating method and device

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0039] Based on the above purpose, the first aspect of the embodiments of the present invention proposes an embodiment of a method for creating a CDP. figure 1 Shown is a schematic flow chart of the method.

[0040] Such as figure 1 As shown in , the method may include the following steps:

[0041] S1 acquires the information of the file whose data has changed in response to the change of the data of the operating system;

[0042] S2 captures the changed content of the corresponding dirty page based on the information;

[0043] S3 uses the memory snapshot to transfer the changed content of the dirty page to the storage device for backup before the system flushes the dirty page.

[0044] In S1, the r...

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Abstract

The invention provides a CDP creating method and device, and the method comprises: in response to the change of the data of an operating system, obtaining the information of a file with the changed data; capturing changed content of the corresponding dirty page based on the information; and transmitting the changed content of the dirty page to a storage device for backup by using the memory snapshot before the system flashes the dirty page. By using the scheme of the invention, the utilization rate of a disk can be reduced, various changes of data can be continuously recorded, data protection can be continuously carried out, data security and service rapid recovery of a local service system can be ensured, and disaster recovery of data and application in a remote disaster recovery center can be realized.

Description

technical field [0001] The field relates to the field of computers, and more particularly to a method and apparatus for creating a CDP. Background technique [0002] CDP (Continuous Data Protection) technology is a data protection technology based on continuous time points. During system operation, whenever new production data is written to a data block, a copy of the data will be captured and stored in Mirroring protection is implemented in another independent storage device. At the same time, consistent CDP snapshot points are continuously generated according to the CDP task plan set by the customer for subsequent rapid recovery. Traditional CDP tracks changing data, usually corresponding to some read and write events. By recording data changes on disk, storage administrators can restore a server or storage array (or other CDP-protected storage system) to a previous point of normality. When data changes, the block-level data is replicated and timestamped to track when t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1435G06F11/1448
Inventor 付丽莉李征梅
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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