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Storage device and data caching method

A storage device and data technology, applied in the field of information storage, can solve the problem of slow access speed of storage devices

Active Publication Date: 2009-03-18
UNITED INFORMATION TECH H K COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Embodiments of the present invention provide a storage device and a method for caching data, which are used to solve the problem of slow access speed of storage devices in the prior art

Method used

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  • Storage device and data caching method
  • Storage device and data caching method
  • Storage device and data caching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this example, if Figure 2A As shown, storage devices include:

[0040] The host interface unit 20 is used to receive message instructions from the outside, including write access instructions and read access instructions, and send the received message instructions to the main business processing unit after protocol conversion;

[0041] The main business processing unit 21 is configured to: when receiving a write access instruction: determine the total access bandwidth according to the access bandwidth of each cache unit corresponding to itself, and determine the parallel access bandwidth of the data according to the total access bandwidth and the size of the data in the write access instruction The time required to write each cache unit; the access bandwidth of a cache unit refers to the maximum rate at which data is read or written from the cache unit, such as 100 bits per second.

[0042] If the determined time exceeds the preset time threshold, select other cach...

Embodiment 2

[0064] In this example, if Figure 2B As shown, storage devices include:

[0065] The host interface unit 20 is used to receive message instructions from the outside, including write access instructions and read access instructions, and send the received message instructions to the main business processing unit after protocol conversion;

[0066] The main business processing unit 21 is configured to: when receiving a write access instruction: determine the total access bandwidth according to the access bandwidth of each cache unit corresponding to itself, and determine the parallel access bandwidth of the data according to the total access bandwidth and the size of the data in the write access instruction The time required to write each cache unit;

[0067] If the determined time exceeds the preset time threshold, select other cache units in the storage device except the cache unit corresponding to the main business processing unit, and write the data in the write access inst...

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PUM

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Abstract

An embodiment of the invention discloses a storage device, which comprises a plurality of buffer units and a main business processing unit, wherein the buffer units are used to buffer data, the main business processing unit is used to confirm the required time of parallel writing to-be-buffered data in a buffer unit corresponding to the main business processing unit, when the time surpasses the preset time threshold level, other buffer units except the relative buffer unit in the storage device are confirmed, and the data is written in the relative buffer unit and the other buffer units. The embodiment of the invention further discloses a method for buffering data. The invention can effectively increase the data access speed of the storage device.

Description

technical field [0001] The invention relates to the field of information storage, in particular to a storage device and a method for caching data. Background technique [0002] Storage area network (storage area network, SAN) storage devices, such as disk arrays, etc., in which the storage medium is a hard disk group formed by combining multiple independent hard disks in different ways. The storage capacity is large, and the storage device provides data Redundant storage service is a high-performance storage device. [0003] Such as figure 1 Shown is a schematic diagram of the internal structure of a SAN storage device, which includes a host interface unit, a main service processing unit, a cache unit, a backup battery unit, a storage interface unit, and a storage medium unit. in: [0004] The host interface unit is mainly used to receive external instructions and convert the instructions into protocols to realize the connection between different client hosts and storage ...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F12/08G06F12/0802
Inventor 郑卫红
Owner UNITED INFORMATION TECH H K COMPANY