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Method for dynamically transferring data and its device

A technology of dynamic migration and data, which is applied in the direction of memory address/allocation/relocation, input/output to record carrier, etc., and can solve the problems of not reflecting data objects, waste of system resources, data management and maintenance, etc.

Inactive Publication Date: 2004-12-29
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing databases cannot reflect this change in access to data objects. Data objects rarely change once they have been stored, and the management and maintenance of data objects by the database is based on the collection of all data objects stored in the entire database.
Therefore, a large amount of system resources are wasted on the management and maintenance of data with low access probability

Method used

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  • Method for dynamically transferring data and its device
  • Method for dynamically transferring data and its device
  • Method for dynamically transferring data and its device

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Embodiment Construction

[0019] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0020] With the popularization of high-speed Internet and the emergence of high-speed Internet access, the universal and in-depth multimedia and information are greatly enriched, and the storage capacity doubles every year. NAS devices are completely data-centric, completely separate storage devices from servers, and centralize data management, thereby effectively releasing bandwidth, greatly improving overall network performance, and effectively reducing total cost of ownership. The current data storage software is more and more mature.

[0021] The present invention considers that the accessed data objects are divided into hot data and unpopular data according to the probability of data objects being accessed. Among them, the hot data objects are the data objects with frequent data operations in the investigated time period; the unpopular data objects are the...

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Abstract

The present invention provides a method for dynamically migrating data, comprising the steps of: respectively storing data objects in the first storage area and the second storage area according to the access probability of the data objects; If the requested data object is not in the first storage area, then search for the requested data object in the second storage area; record the access result of the data object, and calculate the access probability of the data object; if the data object The access probability of the data object is greater than or equal to the predetermined threshold, then the data object is kept in the first storage area, or migrated from the second storage area to the first storage area; and if the access probability of the data object is less than the predetermined threshold value, the data object is Remain in the second storage area, or migrate from the first storage area to the second storage area. In addition, the invention also provides a device for dynamically migrating data.

Description

technical field [0001] The present invention relates to a method and device for dynamically migrating data, in particular, to a method of dynamically migrating data according to the change of the access frequency of the data object, and partitioning and storing the data object according to the access probability of the data object to speed up the data access speed methods and devices. Background technique [0002] Data storage backup technology and storage management originated from the terminal / host computing model in the 1970s. At that time, because data was concentrated on the host, easy-to-manage mass storage devices, tape libraries were necessary equipment at that time. After the 1980s, due to the development of PCs, especially the popularization of the most widely used client / server model and the development of the network in the 1990s, file servers and database servers on the network are often the places where key data is concentrated, while the client computer A cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor GANG ZHUYANG LIUCHENTAO YU
Owner LENOVO (BEIJING) LTD