For your blog post, read the chapter and then define and explain the
following terms: (Due by 12 p.m. on 5/28/2013).
following terms: (Due by 12 p.m. on 5/28/2013).
IT Infrastructure
Client/server computing
Moore's Law
Law of Mass Digital Storage
Metcalfe's Law
Technology standards (and include some examples from chart on page 175)
7 components for IT infrastructure (beginning on page176)
Legacy system
Grid computing
Virtualization
Green computing
Cloud computing (also include definition of public vs private cloud)
Open source software
Service Oriented architecture (SOA)
Software as a Service (SaaS)
Mashup
Scalability
These terms need to be defined and explained in your own words (using the
textbook as your reference and guide). Be sure to include the textbook APA
citation at the end of your blog post.
Next, identify and explain a concept from the Chapter 5 reading that you found interesting and discuss what it is, why you found it interesting, and any questions or comments you have about the concept. (This can be from any of your reading of the chapter - not limited to just the terms you defined above).
Remember, in order to post your response, just choose the "comment" option and comment on the post I made (rather than creating a new post). By doing this, I am able to see the date and time you posted your comment.
IT Infrastructure consists of a set of physical devices and software applications that are required to operate the entire enterprise. But IT infrastructure is also a set of firm wide services budgeted by management and comprising both human and technical capabilities.
ReplyDeleteClient/server computing
In client/server computing, desktop or laptop computers called clients are networked to powerful server computers that provide the client computers with a variety of services and capabilities. Computer processing work is split between these two types of machines. The client is the user point of entry, whereas the server typically processes and stores shared data, serves up Web pages, or manages network activities. The term" server" refers to both the software application and the physical computer on which the network software runs. The server could be a mainframe, but today, server computers typically are more powerful versions of personal computers, based on inexpensive chips and often using multiple processors in a single computer box.
Moore's Law
In 1965, Gordon Moore, the directory of Fairchild Semiconductor's Research and Development Laboratories, an early manufacturer of integrated circuits, wrote in Electronics magazine that since the first microprocessor chip was introduces in 1959, the number of components on a chip with the smallest manufacturing costs per component had doubled each year.
Law of Mass Digital Storage
A second technology driver of IT infrastructure change is the Law of Mass Digital Storage. The world produces as much as 5 Exabyte’s of unique information per year. The amount of digital information is roughly doubling every year. Fortunately, the cost of storing digital information is falling at an exponential rate of 100 percent a year.
Metcalfe's Law
ReplyDeletethis law was point by George Gilder in 1993, it sates the relationship between the value and network's clients. This law states that the more clients a network has, this network is more valueable.
Technology standards
Today's enterprise infrastructure and Internet computing would be impossible both now and in the future-without agreements among manufacturers and widespread consumer acceptance of technology standards. Technology standards are specifications that establish the compatibility of products and the ability to communicate in a network.
American Standard Code for information Interchange(1958)
Common Business Oriented Language(1959)
Unix(1969-1975)
Transmission Control Protocol/Internet Protocol(1974)
Ethernet(1973)
IBM/Microsoft/Intel Personal Computer(1981)
World Wide Web(1989-1993)
7 components for IT infrastructure
Computer Hardware Platform(Dell, IBM, Sun, HP. Apple, Linux machines)
Operating Systems Platforms(Microsoft Windows, Unix, Linux, Mac OS X, Google (IBM, EDS, Accenture)
Data Management and Storage(IBM DB2, Oracle, SQL Server, Sybase, MySQL, EMC Systems)
Internet Platforms(Apache, Microsoft IIS.Net, Unix, Cisco, Java)
Legacy system are generally older transaction processing systems created for mainframe computers that continue to be used to avoid the high cost of replacing or redesigning them. Replacing these systems is cost prohibitive and generally not necessary if these older systems can be integrated into a contemporary infrastructure.
Grid computing, involves connecting geographically remote computers into a single network to create a virtual supercomputer by combining the computational power of all computers on the grid. Grid computing takes advantage of the fact that most computers use their central processing units on average only 25% of the time for the work they have been assigned, leaving these idle resources available for other processing tasks. Grid computing was impossible until high-speed Internet connections enabled firms to connect remote machines economically and move enormous quantities of data.
Virtualization is the process of presenting a set of computing resources so that they can all be accessed in ways that are not restricted by physical configuration or geographic location. Virtualization enables a single physical resource to appear to the user as multiple logical resources.
Green computing refers to practices and technologies for designing, manufacturing, using, and disposing of computers, servers, and associated devices such as monitors, printers, storages devices, and networking and communications systems to minimize impact on the environment.
Cloud computing refers to a model of computing that provides access to a shared pool of computing resources, over a network, often the Internet. These "clouds" of computing resources can be accessed on an as-needed basis from any connected device and location. Thousands or even hundreds of thousands computers are located in cloud data centers, where they can be accessed be desktop computers, laptop computers, netbooks, entertainment centers, mobile devices, and other client machines linked to the Internet, with both personal and corporate computing increasingly moving to mobile platforms. IBM, HP, Dell, and amazon operate huge, scalable cloud computing centers that provide computing power, data storage, and high-speed Internet connection to firms that want to maintain their IT infrastructures remotely. Software firms such as Google, Microsoft, SAP, Oracle, and Salesforce.com sell software applications as services delivered over the Internet.
ReplyDeleteOpen source software is software produced by a community of several hundred thousand programmers around the world.
Service oriented architecture (SOA) is set of self-contained services that communicate with each other to create a working software application. Business tasks are accomplished by executing a series of these services. Software developers reuse these services in other information’s to assemble other applications as needed.
Services for delivering and providing access to software remotely as a Web-based service are now referred to as software as a service (SaaS).
Mashup
The software you use for both personal and business tasks may consist of large self-contained programs, or it may be composed of interchangeable components that integrate freely with other applications on the Internet. Individual users and entire companies mix and match these software components to create their own customized applications and to share information with others. The resulting software applications are called mashups.
Scalability
Laudon, K. and Laudon, J. (2012). Management Information Systems: Managing the Digital Firm.
ReplyDeleteNew Jersey: Pearson Education
I am interesting the cloud computing. beacuses it is a new techonology and had been spread to many areas. Especially the Icould service from the Apple.Cloud computing refers to a model of computing that provides access to a shared pool of computing resources, over a network, often the Internet.
ReplyDeleteGood example with Apple. Missing the definition for scalability but rest looks good.
ReplyDelete