Chapter 5 - Chapter5:ITInfrastructureandEmerging...

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Produced by Dr. Brian Janz 1 Chapter 5: IT Infrastructure and Emerging Technologies Part 1: The Evolu<on of IT Infrastructure Learning Objec<ves DeFne IT infrastructure and describe its components Iden<fy and describe the stages and technology drivers of IT infrastructure evolu<on Assess contemporary computer hardware pla±orm trends Assess contemporary soGware pla±orm trends Evaluate the challenges of managing IT infrastructure and management solu<ons
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Produced by Dr. Brian Janz 2 Defning IT InFrastructure Set oF physical devices and soGware required to operate enterprise Set oF frm‐wide services including: Compu<ng pla±orms providing compu<ng services Telecommunica<ons services Data management services Applica<on soGware services Physical Facili<es management services IT management, standards, educa<on, research and development services “Service pla±orm” perspec<ve more accurate view oF value oF investments Evolu<on oF IT inFrastructure MainFrame and minicomputer era: 1959 to present 1958 IBM frst mainFrames introduced, eventually used to support thousands oF online, remote, “dumb,” terminals 1965 less expensive DEC minicomputers introduced, allowing decentralized compu<ng Personal computer era: 1981 to present 1981 Introduc<on oF IBM PC ProliFera<on in 80s, 90s resulted in growth oF personal soGware Client‐Server era: 1983 to present Desktop clients networked to servers, with processing split between clients and servers Various types oF servers (network, print, applica<on, Web), may be “<ered” servers Client‐server grew once the no<on oF “mainFrame as server” become more common Enterprise Internet compu<ng era: 1992 to present Move toward integra<ng disparate networks, applica<ons using Internet standards and enterprise applica<ons Cloud Compu<ng: 2000 to present A model oF compu<ng where frms and individuals obtain compu<ng power and soGware applica<ons over the Internet ²astest growing Form oF compu<ng
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Produced by Dr. Brian Janz 3 Figure 5-2A Figure 5-2B Eras in IT Infrastructure Evolu<on (cont.)
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Produced by Dr. Brian Janz 4 Figure 5-3 A Mul<‐<ered Client/Server Network (N‐Tier) In a multi-tiered client/server network, client requests for service are handled by different levels of servers. Technology Drivers of Infrastructure Evolu<on Moore’s law and microprocessing power Compu<ng power doubles every 18 months Nanotechnology: May shrink size of transistors to width of several atoms Limi<ng factors: Heat dissipa<on needs, power consump<on concerns Law of Mass Digital Storage The amount of data being stored each year doubles
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Produced by Dr. Brian Janz 5 Figure 5-4 Moore’s Law and Microprocessor Performance Figure 5-5 Falling Cost of Chips
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This note was uploaded on 02/24/2011 for the course MIS 7650 taught by Professor Janz during the Spring '11 term at U. Memphis.

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Chapter 5 - Chapter5:ITInfrastructureandEmerging...

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