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A communication method between host and storage array

A storage array and host technology, applied in the field of storage arrays, can solve problems such as unfavorable storage array management, and achieve the effects of improving storage performance, communication efficiency, manageability and scalability.

Active Publication Date: 2016-02-10
UNITED INFORMATION TECH H K COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This communication method that completely separates the control data from the storage data is not conducive to the management of the storage array. For example, only the information of the data block is known in the band, and it is not known what kind of storage array the logical volume (LUN) is on and what kind of storage array it is in. RAID level

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  • A communication method between host and storage array

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Embodiment Construction

[0018] The basic idea of ​​the communication method between the host and the storage array proposed by the present invention is as follows: for both the in-band channel and the out-of-band channel, both control data and user data can be transmitted, so a dual-channel transmission can be formed between the host and the storage array Data can improve the manageability and scalability of the storage array at the same time. When implementing a virtual storage network, user data and control data flow on the same path, and the abstraction layer exists in the data path, thereby improving host and storage. Communication efficiency between devices, thereby improving storage performance. In order to realize this function, it is necessary to perform encapsulation and unpacking operations on the data packets at the host end and the storage array end.

[0019] In order to make the technical principles, features and technical effects of the technical solution of the present application clea...

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Abstract

The invention discloses a method for a host and a storage array to communicate. The method comprises the following steps of: encapsulating to-be-transmitted data into a special data packet by the host, and setting a data type indicating bit of the special data packet according to a data type; sending the data packet into a channel with a shorter to-be-sent data queue for transmission by the host according to to-be-sent data queues of an out-of-band channel and an in-band channel; receiving the special data packet by the storage array from the out-of-band channel and the in-band channel; and analyzing the data type indicating bit in the received special data packet by the storage array; analyzing out control data from the special data packet if the data type indicating bit is a firs value; and analyzing out user data from the special data packet.

Description

technical field [0001] The present application relates to the technical field of storage arrays, in particular to a communication method between a host and a storage array. Background technique [0002] The data between the host and the redundant array of independent storage (RAID) is roughly divided into two parts: control data and user data. The two can be completely separated and completed with different protocols through different I / O channels; they can also be completely unified and completed with the same protocol in the same I / O channel. After the two are fully unified, user data and control data are transmitted on the same path. This solution is relatively simple to implement, especially because they do not require special software to be installed on the server (compared to traditional multipath software ). However, since a path channel needs to transmit both user data and control data, communication efficiency will be reduced. [0003] Therefore, in the prior art...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 赵胜志
Owner UNITED INFORMATION TECH H K COMPANY