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Link selection method and device

A link selection and link technology, applied in the field of communication, can solve the problems affecting the link transmission rate, unable to complete read and write operations, low fault tolerance rate, etc., to improve the utilization rate and transmission rate, improve the overall read and write performance, The effect of improving fault tolerance

Active Publication Date: 2019-09-17
BEIJING TENGLING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above target link selection process, since the obtained link identifier is unique, that is, the obtained target link is unique, so when the target link fails, the read and write operations cannot be completed, and the fault tolerance rate is low. In addition, if the target link is determined by the above-mentioned modulus algorithm, it is very likely that when each hard disk is read and written, the read / write IO request is issued through the same target link, resulting in the use of the link The rate is low, and, in this case, since all read / write IO requests are transmitted through the same target link, which affects the link transfer rate

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Embodiment Construction

[0045] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0046] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention provides a link selection method and device. The method includes the steps: determining states and the current usage frequency of links; determining a chain line with a normal working state and the lowest current usage frequency to serve as a target chain line; transmitting data to be transmitted to a target hard disk according to the target chain line. By the aid of the method, error-tolerant rate can be increased, the use rate and the transmission rate of the chain lines are increased, and overall reading and writing performances of a storage server are effectively improved.

Description

technical field [0001] The present application relates to the communication field, and in particular to a link selection method and device. Background technique [0002] A storage server is a server that can provide a large storage space. It must have a fast processing chip, a large RAM (Random Access Memory, random access memory), and a very large internal disk space, in order to deal with end users at any time. Possible application deployment needs. [0003] In storage servers, the motherboard is usually the heart of a storage server design. In the architecture of the storage server motherboard, the CPU can establish a connection with the RAID array through the SAS (Serial Attached SCSI, Serial Attached SCSI technology) controller, FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), and SAS expander. And there may be multiple links between the FPGA and the SAS expander. When reading and writing data, the CPU will receive the read / write IO request from t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F13/40
Inventor 宋文革
Owner BEIJING TENGLING TECH CO LTD