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Method and system for distributing disk array data

A technology of disk array and data distribution, applied in the direction of input/output to record carrier, etc., to solve the access bottleneck, improve performance, and improve performance.

Active Publication Date: 2011-06-22
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a disk array data distribution method and system, which can remarkably improve the performance of the traditional optimized disk array data distribution technology, and help solve the problem of disk array access bottlenecks, thereby greatly improving Disk access performance, especially for large-scale, frequently accessed video storage and other applications, can also help save enterprise costs and help enterprises adopt more flexible storage architecture methods

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  • Method and system for distributing disk array data
  • Method and system for distributing disk array data
  • Method and system for distributing disk array data

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Embodiment Construction

[0040] The present invention provides a disk array data distribution system and method, the basic concept of which is: effectively combine the hidden Markov model with the disk array data distribution technology, use the hidden Markov model to optimize the distribution of data in the disk array, By collecting I / O access information samples for a period of time, using the hidden Markov model to analyze the samples and predict the disk access information, reorganize the distribution of data on the disk array according to the predicted results, and separate the hot and cold data. Improve disk array performance by replacing service data access paths.

[0041] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] see figure 1 , the figure shows a disk array data distribution system according to an embodiment of the present invention, including: an interface management module, a data collection module, a hidde...

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Abstract

The invention provides a method and a system for distributing disk array data. The method comprises: acquiring data of disk array I / O access; calculating the characteristic parameters of disk array I / O access, including an observation probability matrix of disk access states, a set of observable symbols, a set of disk access states, an initial state probability matrix and the probability distribution of state transition in order to construct a hidden Markov model for the distribution states of disk array I / O access; calculating on the basis of the constructed hidden Markov model, acquiring a state sequence with a maximum I / O probability and taking the state sequence as a state output sequence of the most possible disk I / O access; analyzing the state output sequence of the most possible disk I / O access and finding the distribution of hot disk, hot data and cold data in order to formulate data re-distribution strategy; and performing disk data migration according to the data re-distribution strategy. The method can greatly improve disk access performance.

Description

technical field [0001] The invention relates to a technology for optimizing the data distribution of a disk array, which is usually used in the application of large-scale and intensive access storage systems. Background technique [0002] With the acceleration of informatization, the amount of data and the amount of access are increasing explosively, and storage systems and disk arrays are facing the pressure of performance and high data access. [0003] At present, some main technologies for optimizing disk array data distribution are mainly to optimize the disk I / O distribution information at the current moment, but the current disk I / O distribution information cannot correctly reflect the disk I / O at the next point in time. / O information, in this way, even if some optimizations are made to the data distribution, the optimization effect cannot be achieved well. After careful research, the applicant considers that if the collected disk I / O information at the current momen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 张雷
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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