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33 Cards in this Set
- Front
- Back
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IT Infrastructure
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the shared technology resources that provide the platform for the firm's specific information system applications
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Firm Wide Services
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- computing platforms providing computing services
- telecommunications services - data mgmt services - application software services - physical facilities mgmt services - IT mgmt, standards, education, research & development services |
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Technology Drivers of Infrastructure Evolution
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1. Moore's Law & microprocessing power
2. The Law of Mass Digital Storage 3. Metcalfe's Law & network economics 4. Declining communications costs & the Internet 5. Standards & network effects |
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Moore's Law & Microprocessing Power
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- power of microprocessors doubles every 18 months
- computer power doubles every 18 months - the price of computing falls by half every 18 months |
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Nanotechnology
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Uses individual atoms & molecules to create computer chips & other devices
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Law of Mass Digital Storage
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- amount of digital information is roughly doubling every year
- the cost of storage is falling at an exponential rate of 100 % per year |
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Metcalfe's Law & Network economics
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The value of a network grows exponentially as a function of the number of network members
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7 Major Components of IT Infrastructure
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1. Computer hardware platforms
2. operating system platforms 3. enterprise & other software applications 4. data management & storage 5. networking/telecommunications platform 6. Internet platforms 7. consulting & system integration services |
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Computer Hardware Platforms
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client machines
server machines mainframe systems |
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Operating System Platforms
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Windows dominates
Unix or Linux widely used as server software Apple widely used as well |
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Enterprise Software Applications
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largest suppliers of enterprise software are:
SAP Oracle PeopleSoft |
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SANs
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Storage Area Networks
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Storage Area Networks
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connect multiple storage devices on dedicated network
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Software Integration
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ensuring new infrastructure works with legacy systems
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Legacy Systems
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older TPS created for mainframes that would be too costly to replace or redesign
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Contemporary Hardware Platform Trends
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1. Emerging mobile digital platform
2. Grid Computing 3. Cloud Computing & Computing Utility 4. Autonomic Computing 5. Virutalization & mulitcore processors |
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Grid Computing
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connecting geographically remote computers into a single network capable of working in parallel on business problems that require short term access to large computational capacity
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Autonomic Computing
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effort to develop systems that develop systems that configure, heal & protect themselves
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Virtualization
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presents computing resources so that they can be accessed in ways that are not restricted by configuration
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Multicore processors
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reduced power requirements, enhanced performance
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Contemporary Software Platform Trends
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1. Linux & Open Source Software
2. Software for the web: Java & Ajax 3. Web Services & Service-Oriented Architecture 4. Mashups & Widgets 5. Software Outsourcing |
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Java
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object oriented programming language
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Ajax
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asynchronous javascript & XML
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XML
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Extensible Markup Language
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SOAP
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Simple Object Access Protocol
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WSDL
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Web Services Description Language
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UDDI
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Universal Description, Discovery & Integration
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Mashups
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Combinations of two or more online applications such as combining mapping software with local content
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Widgets
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Small programs that can be added to Web pages or placed on the desktop to add additional functionality
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Software Outsourcing
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1. changing sources of software
2. software packages & enterprise software 3. software as a service (SaaS) 4. Software outsourcing |
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Management Issues
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- dealing with infrastructure change
- mgmt & governance - making wise infrastructure investments |
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Scalability
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ability to expand to serve larger number of users
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TCO Model
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used to analyze direct & indirects costs of systems
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