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Communication method and equipment of SAS (Serial Attached SCSI) link

A communication method and equipment technology, applied in the field of SAS link communication method and equipment, can solve the problem of inaccessibility of DEU resources, and achieve the effect of improving reliability

Inactive Publication Date: 2010-09-15
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The present invention provides a communication method and equipment for SAS links, which solves the problem in the prior art that when one or more links are damaged, subsequent DEU resources cannot be accessed

Method used

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  • Communication method and equipment of SAS (Serial Attached SCSI) link
  • Communication method and equipment of SAS (Serial Attached SCSI) link
  • Communication method and equipment of SAS (Serial Attached SCSI) link

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Embodiment Construction

[0055] Based on the description in the background art, it can be seen that the SAS connection in the prior art is a serial connection, and when one or more links are damaged, subsequent DEU resources cannot be accessed.

[0056] In order to solve such a problem, the present invention solves this problem through a ring-like structure technology, and accordingly proposes a communication method of an SA link.

[0057] Such as image 3 As shown, it is a schematic structural diagram of a SAS link communication method proposed by the present invention, and the method is applied to a system including a storage control device, an interface management device and at least one disk device.

[0058] Wherein, the interface management device is connected to the storage control device and the disk device, and the interface management device establishes a connection with the disk device through at least two interfaces. The method specifically includes the following steps:

[0059] Step S301,...

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Abstract

The invention discloses communication method and equipment of an SAS (Serial Attached SCSI (Small Computer System Interface)) link. Through the application of the technical scheme of the invention, an IO command can be ensured to pass from another interface by using different SAS interface values when a disconnected link appears in a serial link by dint of a link standby with a plurality of interfaces, thereby the redundancy of a back-end SAS access can be realized and the reliability of the system communication is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a communication method and equipment for a SAS link. Background technique [0002] Serial Attached SCSI (Small Computer System Interface, small computer system interface) interface, that is, SAS (Serial Attached SCSI), is a disk connection technology, and the now popular SATA (Serial Advanced Technology Attachment, Serial Advanced Technology Attachment) hard disk The same, all adopt serial technology to obtain higher transmission speed, and improve internal space by shortening the connection line. SAS is a new interface developed after the parallel SCSI interface. This interface is designed to improve the performance, usability and expandability of the storage system and provide compatibility with SATA hard drives. [0003] The interface technology of SAS is backward compatible with SATA. The backplane (Back Panel) of the SAS system can connect not only dual-port...

Claims

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Application Information

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IPC IPC(8): G06F13/16
Inventor 朱辉胡荣国
Owner NEW H3C TECH CO LTD
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