A method and system for solving server backplane bmc lighting vpp address conflict

Abstract

The present invention proposes a method to solve the VPP address conflict of the server backplane BMC lighting. It modifies the frame format of the communication between the BMC and the CPLD and identifies the first CPU Port and the first CPU Port corresponding to the first hard disk on the backplane by selecting the DIP switch on the backplane. A VPP address and CPLD analyze the lighting signal to determine whether the first hard disk and the second hard disk are consistent. If they are consistent, use LED lighting; if they are inconsistent, discard them. The present invention modifies the frame format of the communication between BMC and CPLD and cooperates with the backplane DIP switch status so that the CPLD can accurately identify the only hard disk and in the VMD unavailable mode, realize the control by analyzing the lighting information instead of the VPP signal issued by the CPU. Hard drive lighting control. It solves the problem of VPP address conflict in the existing BMC lighting solution in the case of multiple CPUs, and realizes the VMD unavailable mode and the BMC normal lighting operation of the hard disk.

Description

technical field [0001] The invention relates to the technical field of BMC lighting VPP on a server backplane, and specifically provides a method and a system for solving the address conflict of the BMC lighting VPP on a server backplane. Background technique [0002] Nowadays, the server industry is becoming more and more mature, and server products are emerging in an endless stream. However, the most basic classification of hard disks, the key components used in servers, is still NVME hard disks and SAS / SATA disks. [0003] Intel's CPU supports VPP lighting for NVME hard disks. The principle is that the CPU directly sends VPP lighting signals through the I2C bus for lighting, including hard disk positioning lights and hard disk error lights. The hard disk positioning light is blue, and the hard disk error light is red. The lighting of the NVME hard disk is divided into two modes: VMD Enable mode and VMD Disable mode. In the VMDEnable mode, the lighting phenomenon is compl...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, in a single-CPU server, there is no problem with the lighting management operation, but when using a multi-CPU server, since the VPP Address of each CPU is the same, this solution obviously does not do any processing, that is, in In the case of multiple CPUs, the CPU cannot distinguish which CPU the BMC lighting information comes from

Therefore, all NVME hard disks with the same VPP address will be lit, obviously, this situation is not correct

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