Test method of SGPIO (Serial General Purpose Input/Output) signal on SAS (Serial Attached Small Computer System Interface) backboard

Abstract

The invention provides a test method of an SGPIO (Serial General Purpose Input / Output) signal on an SAS (Serial Attached Small Computer System Interface) backboard. The method comprises the following steps of: accessing an MINI SAS cable in the SAS backboard and a test system; and then carrying out controlling test through a visualized unit. The SAS backboard structurally comprises a data generating and processing unit simulating an SGPIO signal, the visualized unit and an MINI SAS interface. Compared with the prior art, the test method of the SGPIO signal on the SAS backboard has the advantages of reasonable design, simple structure, convenient use, easy maintenance, and the like, greatly simplifies the test flow under the conditions that server and hard disk resources are not occupied, avoids repeatedly plugging a hard disk and repeatedly booting up or shutting down a server in a traditional test mode and realizes the graphic interface of the SGPIO signal test flow.

Description

technical field [0001] The invention relates to a test method for serial input / output SGPIO signals, in particular to a test method for SGPIO signals on a SAS backplane. Background technique [0002] SGPIO is the abbreviation of Serial General Purpose Input / Output in English. It is used for the communication between the SAS / SATA control card HBA and the hard disk backplane. The SGPIO bus and the MiniSAS cable are placed in one cable to facilitate the connection between the HBA and the backplane. At present, the SGPIO signal (through the SFF-8485 protocol) is generally used on the SAS backplane to realize the location of the hard disk, the indication of the hard disk status, etc.; the analysis of the SFF-8485 protocol is generally performed by the programmable logic device integrated on the SAS backplane To realize, after the SFF-8485 protocol of the programmable logic device is analyzed, the status of each hard disk is indicated through the LED or LCD display device. At pr...

AI Technical Summary

Problems solved by technology

At present, the test of SFF-8485 protocol analysis on the mass-produced SAS backplane mainly adopts: connect the SAS backplane fully equipped with hard disks to the system, and use the system software matched with the SAS card to test each hard disk one by one after power-on. This method has the following disadvantages: First, the test speed is slow. After the system is powered on for each SAS backplane, the software interface is used to test each hard disk position one by one, which brings great inconvenience to the mass production of the system. ; The second is to connect the SAS backplane with full hard disks to the system. Long-term testing will affect the performance and usage time of the hard disks, resulting in waste of hard disk resources. It greatly affects the test efficiency and stability; third, in the early stage of SAS backplane design, it is necessary to repeatedly debug whether the analysis of the SFF-8485 protocol by the programmable logic device is correct, and the server system needs to be restarted continuously. The performance has a great impact and also causes unnecessary waste of resources; therefore, a new test method for SGPIO signals on the SAS backplane is needed to replace the current test method with low efficiency and waste of resources