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Data storage method and device

A data storage device and data storage technology, applied in memory systems, electrical digital data processing, memory address/allocation/relocation, etc., can solve the problems of reduced storage performance and poor sequential access performance, and achieve the effect of improving storage performance

Active Publication Date: 2010-08-04
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] A storage method provided by the prior art is: cache all hot data on the storage medium as the secondary cache, at this time, when the access mode of hot data In the sequential access mode, because the sequential access performance of the storage medium of the second-level cache is worse than that of the traditional disk, the storage performance will be reduced

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] figure 1 It is a flowchart of an embodiment of the data storage method of the present invention, such as figure 1 As shown, the data storage method may include:

[0024] Step 101, select data to be eliminated from the first-level cache.

[0025] Step 102, after determining that the data to be eliminated is random access data, storin...

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Abstract

The embodiment of the invention provides a data storage method and a data storage device. The data storage method comprises the following steps: selecting data to be eliminated from a first level cache; and after the data to be eliminated is determined as random access data, storing the data to be eliminated in a second level cache. In the embodiment of the invention, the random access data is stored in the second level cache and the performance of a storage medium of the second level cache and the storage space of the second level cache are fully used, so the storage performance of a storage system using the second level cache is further enhanced.

Description

technical field [0001] The present invention relates to the technical field of data storage, in particular to a data storage method and device. Background technique [0002] Current data service applications have higher and higher requirements on storage system performance, input and output (Input Output; hereinafter referred to as: IO) concurrency performance, and energy consumption. The capacity of the first-level cache (cache) is limited and the price is relatively high. Therefore, in order to improve the performance of the storage system and reduce the energy consumption of the storage system, the use of the second-level cache is increasing, for example: using a solid state disk (Solid State Disk; Hereinafter referred to as: SSD) as the secondary cache. [0003] Among them, the main characteristic of the storage medium of the secondary cache is that the random access performance is relatively good, which is about 20 times that of the traditional disk, but the gap betwee...

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Application Information

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IPC IPC(8): G06F12/08G06F12/0897G06F12/128
Inventor 杜小华龚涛董浩张翔王国丰
Owner HUAWEI TECH CO LTD