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Classification storage management method for VOD system

A management method and video-on-demand technology, which are applied to TV system components, memory systems, bidirectional working systems, etc., can solve problems such as increasing the capacity of logical hard disks, achieve a balanced hardware price, increase the corresponding speed, and balance the on-demand hit rate. Effect

Inactive Publication Date: 2010-12-29
NANJING UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

Users may feel that the speed of accessing the hard disk is a little slower, but they will obviously feel that the capacity of their logical hard disk is greatly improved

Method used

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  • Classification storage management method for VOD system
  • Classification storage management method for VOD system
  • Classification storage management method for VOD system

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] combine Figure 1 to Figure 4 , the hierarchical storage management method of the video-on-demand system of the present invention, comprises the following steps:

[0028] The first step is to randomly store 20% of all on-demand video data on the first-level high-speed disk array storage device; among the other 80% video data, 30% of the data is stored on the second-level DVD library , 70% of its data is stored in the third-level tape library;

[0029] The second step is to perform data migration management on the video data during the initialization period of the video-on-demand system, that is, to use the improved LFRU data migration management method to perform data migration management, and the steps are as follows:

[0030] Assuming that there are N programs in the program library of the system, the program access probability after sorting compli...

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Abstract

The invention discloses a method of hierarchical storage management used for a video-on-demand system. Firstly, 20 percent of all the video data to be on demand is randomly stored a storage device of one level high-speed disk array; in 80 percent of the other video data, 30 percent of the data is stored in a DVD optical disk juke-box of two level and 70 percent of the data is stored in a magnetictape librarian of three level; in the period of initialization of the video-on-demand system, the video data is conducted by data migration management; after the period of initialization of the system, the video data is conducted by the minimum weight period-frequency data migration management. The invention greatly improves the on-demand hit rate of video-on-demand programs on a high-speed storage device, can increase the corresponding speed of service provided by the system and makes better balance between the performance and the price of hardware.

Description

A technical field [0001] The invention belongs to the field of data storage, in particular to a hierarchical storage management method of a video-on-demand system. Two background technology [0002] Hierarchical storage management is to manage all storage resources owned by users in a unified manner, improve the utilization rate of each storage device, and save costs. In tiered storage, the tiering of storage is very obvious. In terms of equipment, there are tape drives, tape libraries, NAS, low-end disk arrays, high-end storage systems, and so on. In the traditional hierarchical storage management system, the value of data stored in online, near-line and offline storage is different. How to make good use of each storage resource according to the different values ​​of user data is a challenge. Hierarchical storage management originated in 1978 and was first used in IBM's mainframe system. In the past 10 years, HSM has been widely used in Unix and Windows platforms of open ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/12H04N7/173H04N5/76G06F12/122
Inventor 刘凤玉魏维赵学龙李千目张琨徐建衷宜
Owner NANJING UNIV OF SCI & TECH
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