| SmartRack is a server system with new fusion architecture,which has a series of advantages including the deployment of high density,flexible allocation of resources,convenient management and low power consumption.Influenced by the demand of new fusion architecture,there are many revolutionary changes happening in electronic hardware,mechanism parts,firm-ware and upper software,and the changes mainly reflect the idea of "fusion".After completing hardware and software protocols,traditional hardware and software will decoupling integrate and deeply transform from traditional "accumulate" to new "fusion".In 2009,Internet company proposed preliminary concept about server with new fusion architecture in order to solve the contradiction between traditional server system and the development needs of application.In 2012,BAT(Baidu,Alibaba,and Tencent),the leader of Internet companies,proposed server with fusion architecture together,and launched "Scorpio plan",which made unified specification to fusion architecture.In 2014,the "Scorpio-plan" made discussion about the V3.0 specification,and in the same year,the SmartRack system of company Inspur succeeded in upgrading to V4.0,which improved a lot from hardware architecture to software management to become closer to users.The company Inspur participated deeply in the research of server system with fusion architecture from the "Scorpio plan",and played a important role to promote the plan.At the same time,Inspur is the first server supply company to participate entirely in "Scorpio plan" in the electronic industry.As the guider of the development of fusion architecture,Inspur has become the main company to solve the problems of server system with fusion architecture,which occupies over 60%in the market and has become strategic partner of Baidu,Alibaba,Tencent,Qihoo 360,JD and 12306.SmartRack system of company Inspur is produced in the process of t-he demands changing of internet development,SmartRack system also will continue to develop,seeking opportunities to provide more efficient service for a variety of customers.This paper analyzes hardware parts of each subsystem based on the hardware carries in fusion architecture to complete the design and research about hardware system.Main research contents in this paper are as follows:1.The use of centralized power supply centralized cooling scheme to solve the problem of energy consumption,using the standard interface definition to solve various software and hardware compatibility issues and cost control problem,the pooling of resources and resource utilization to solve the problem,solve the problem of efficiency management with centralized management.2.Assess the risk of technical analysis,including the analysis to possible physical interference of parts,boards,cables.the loss analysis to each bus of multistage interconnection,the analysis to power supply protection and redundancy,and give solutions,corresponding cost and periodic change of research according to the analysis result.3.Research each logical architecture implementation scheme in detail,mainly doing study from the choice of main components,which refer to chip,connectors and so on.The research includes the interface definition,maturity,manufacturer cooperation,DFM to BMC chip.Redriver chip,network chip,VRD chip,CPLD chip,Power Connector,high density SSB,and cooper metal clip.And for management software,analyze the function interface definition of I2C and GPIO.4.Research PCB physical implementation scheme of each subsystem,research the best way to accomplish of physical interconnection,research physical space to placement of main components and parts,research PCB material selection of interconnecting boards,including parameter selection of DK.DF,CAF,TG.TD,research the way to route on PCB of each interconnecting circuit,especially the high-speed signals such as PCIE,QPI,LAN.SAS/SATA.USB,Clock and sensitive signals such as SVID,SPI,PECl,LPC,12C,research how to reduce Crosstalk and Insertion Loss.5.Research the high-speed interconnection of system from the aspect of signal simulation,carding all links of the interconnecting bus.For links with high risk,it is necessary to do research about model extraction,link build and simulated analysis.for links which can not satisfy the demand of SPEC,it is necessary to do research about solutions to guarantee the signal integrity of each multistage interconnection lines.6.Measure and analyze to the boards completed manufacturing,measure signals of main high-speed links by using TDR,VNA,high-speed oscilloscope and related measure jig,and analyze the problems and optimized direction according to signal measure data,optimize simulation model by comparing the measure data and simulation data.The main innovations of this paper are as follows:1.The first time to achieve flexible exchange of various types of nodes(calculation,storage,network,etc.)in the whole rack and achieve the integration of resource pool of the data space.The paper achieves the decoupling integrated of calculation module,storage module and network module of the data space through the connections of high-speed network.At the same time,the paper achieves to virtualize resource pools by software,and achieves to define calculation,storage and network by software.And it achieves dynamic resource allocation based on requirements of the upper layer so we can get the biggest resource utilization efficiency.2.The first time to achieve the centralized management of every sub-node through I2C bus to concentrate all sub-nodes to the BMC management chip of management middle board.And the paper achieves the function of voltage,electricity,temperature,boot and shut down of every child node by the 1000M external network of BMC.The hardware and software resources required for the independent management are reduced,and the management efficiency is greatly improved.3.The first time to concentrate power supply in the whole rack,and use the method of maintaining and protecting before Power Supply.In the middle of the rack,independent Power Supply box is designed,which supply power using "N+N" redundancy strategy,the input of 220V exchange power is changed to 12V straight power through the Power Supply,then the power is conducted to two up-to-down copper medals,and each node get power from the copper metals through a clip.Supply power concentrated reduce loss compared with distribute power supply mode,and improve supply efficiency.4.Use the mode of concentrating thermal dissipation,the first time to use the design of fans wall,which is refer to regulate fan speed through measuring three group nodes' temperature.Use high-power fans instead of distributed small fans to reduce the amount of fans and single fan's loss,the result shows that fan efficiency promote 25%,and at the same time,system noise is effectively cut down.5.Server with new fusion architecture promote 20%on deployment density compared with traditional server,machine from different companies can be compatible with each other because every system follow the same protocol so that deployment efficiency can be promoted a lot. |
PDF Full Text Request