Method and device for reducing hard disk backboard cables in server

Abstract

The invention discloses a method for reducing hard disk backboard cables in a server. The method comprises the steps of step 1, management signals of a hard disk are connected to a BMC in a wiring mode on a printed circuit board; step 2, the BMC analyzes the management signal, the analyzed information is stored in the BMC and converted into IIC data, the IIC data comprises a type identifier and alighting instruction, and the BMC issues the IIC data to a CPLD through an IIC link; and step 3, the CPLD receives the IIC data and then analyzes the IIC data, and the CPLD judges the data interactiontype between the BMC and the CPLD through the type identifier, distinguishes the processor type of the hard disk, identifies the type of the hard disk and executes a corresponding lighting instruction. By means of the mode, cables used on the hard disk backboard can be reduced, meanwhile, the functions of backboard VPP lighting and SGPIO lighting can be achieved, and the manufacturability and maintainability of products are improved.

Description

technical field [0001] The invention relates to the technical field of hard disk management, in particular to a solution for reducing SGPIO cables and VPP cables in a server to support hard disk management. Background technique [0002] At present, hard disks are mainly divided into SAS / SATA hard disks and NVMe hard disks. The management methods of these two hard disks mainly include SGPIO protocol and VPP protocol. When designing the hard disk backplane, the design supports two different protocol functions. In order to meet different configurations and the possibility of subsequent expansion, IIC cables, SGPIO cables and VPP cables are all reserved on the backplane, resulting in too many cables inside the whole machine, which is not conducive to cable routing cable laying and production operations ; Since most of the VPP Header, SGPIO Header, and IIC Header use the same connector type, the cables are easy to be inserted incorrectly; in order to connect these cables, a lot o...

AI Technical Summary

Problems solved by technology

When the backplane is connected to an NVMe hard disk, the CPU uses the VPP protocol to send the lighting information to the CPLD through the cable. The CPLD recognizes the lighting information in the VPP signal and lights up the indicator light corresponding to the slot where the hard disk is located; At this time, the CPLD analyzes the lighting signal issued by the SATA controller integrated in the PCH or the lighting signal issued by the storage controller connected to the motherboard; when there are both SAS/SATA hard disks a...

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