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Architecture of interface target machine for miniature computer system and data transmitting method

A technology of small computer and target device, applied in the field of communication, can solve the problem of inconsistent configuration data and achieve the effect of easy management and execution

Active Publication Date: 2007-04-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The shortcoming of the design architecture of the SCSI target device in the above-mentioned prior art is: the configuration data is stored in the middle layer of the SCSI target device by this architecture, but in the dual-control mode with high reliability requirements, this design cannot satisfy the SCSI target device. It is required for the work of the controller, because the configuration data required by the two SCSI targets must be synchronized in the dual-control mode, and the synchronization operation is completed by the configuration module. Therefore, this architecture will result in two SCSI targets in the same system. Inconsistent configuration data between devices

Method used

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  • Architecture of interface target machine for miniature computer system and data transmitting method
  • Architecture of interface target machine for miniature computer system and data transmitting method
  • Architecture of interface target machine for miniature computer system and data transmitting method

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Embodiment Construction

[0043] The invention provides a structure and a data transmission method of a small computer system interface target device. The core of the invention is: the middle management layer only manages SCSI requests and SCSI commands, saves configuration data in the back-end processing layer, and SCSI requests The execution is also handed over to the back-end processing layer, and the configuration data synchronization between the dual controllers is realized through the back-end processing layer.

[0044] Describe the present invention in detail below in conjunction with accompanying drawing, the schematic diagram of the framework of SCSI target device of the present invention is as shown in Figure 3, the module structure schematic diagram of SCSI target device of the present invention is as shown in Figure 4, comprises following module:

[0045] Front-end driver layer: It contains one or more types of front-end ports and drives the front-end ports. The front-end driver layer needs ...

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Abstract

The invention supply small computer system interface target machine framework and data transmitting method. The framework includes front end drive layer used to receive SCSI request from host computer starter and transmit to middle managing layer and receive processed response back from the middle managing layer and transmit to host computer starter, middle managing layer used to receive SCSI request from the front end drive layer, generate SCSI command, manage the SCSI command, and transmit to back end processing layer receive processed response back from back end processing layer and transmit to front end drive layer, back end processing layer used to store configuration data, process SCSI command, return processed response to the middle managing layer. The invention can be used to keep SCSI target machine configuration data synchronizing with back end processing layer data, unify different SCSI target machine back end processing flow.

Description

technical field [0001] The invention relates to the communication field, in particular to a structure of a small computer system interface target and a data transmission method. Background technique [0002] The main function of the SCSI (Small Computer System Interface) protocol is to transmit commands, status and block data between the host and storage devices. Since the 1980s, the SCSI protocol has been the main protocol for data block transmission between servers. [0003] SCSI was originally a storage unit interface specially designed for small computer systems, and is now widely used in high-reliability, high-performance storage interfaces, such as SCSI hard disks, SAN (storage area network) arrays, etc. The schematic diagram of the SCSI protocol model is shown in Figure 1. The SCSI protocol model is similar to the client-server model, including: SCSI initiators and SCSI targets, each of which includes a link layer and a physical layer, SCSI initiators and SCSI target...

Claims

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Application Information

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IPC IPC(8): G06F13/42G06F3/06
Inventor 孙凌翔张巍
Owner HUAWEI TECH CO LTD
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