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Data storage method and apparatus

A data storage and data technology, applied in the storage field, can solve the problems of increasing the storage time of disk arrays and affecting the overall performance of the storage system, so as to improve the overall performance and reduce the storage time

Inactive Publication Date: 2009-08-12
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

However, since the read and write requests to be processed by each disk array are limited, when the current number of read and write requests corresponding to the disk array exceeds its capacity, the storage operation of the disk array will be slowed down, resulting in the The storage time of the disk array is greatly increased, which also affects the overall performance of the storage system

Method used

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  • Data storage method and apparatus
  • Data storage method and apparatus
  • Data storage method and apparatus

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] see figure 1 , figure 1 The basic flowchart of the data storage provided for the embodiment of the present invention, such as figure 1 As shown, the process may include the following steps:

[0022] Step 101, receiving a write request whose destination physical storage address corresponds to a disk array.

[0023] Usually, a write request generally carries logical unit number (LUN: logical unit number) resource address information, wherein, a LUN resource, which may also be called a SAN resource, is a logical resource. To facilitate subsequent data read and write operations, LUN resources are mapped to disk arrays in the storage system in advance according to certain mapping rules, that is, the mapping relationship between LUN resources ...

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Abstract

The invention discloses a data storage method and a data storage device. The method comprises the following steps: receiving a write request of a destination physical storage address corresponding to a disc array; distributing the disc array for the write request according to the state of the disc array and the states of other disc arrays; and storing write data corresponding to the write request into the distributed disc array. The method and the device utilize the disc array in an idle state to share load with the disc array in a busy state so as to relieve the storage pressure of the disc array in the busy state and improve the storage property of the disc array.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a data storage method and device. Background technique [0002] At present, although the processing speed of the CPU and the storage density of the disk have increased significantly, the access time of the disk has improved little. According to statistics, the access time of the disk is only reduced by 1 / 3 every 10 years. It still stays at the millisecond level, which is 4 to 6 orders of magnitude different from the processing speed of the CPU. Since the overall performance of the storage system depends on the key component with the worst performance in the system, disk access becomes a bottleneck that affects the performance of the entire storage system. [0003] With the development of network technology and the popularization and application of computers, disk array, also known as redundant array of independent disks technology, has been widely used because it can reduce dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/08G06F12/02
Inventor 杨西平周迪
Owner NEW H3C TECH CO LTD
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