Quiz 7 - Lecture notes 7 PDF

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Covering Chapter 7...

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MIS infrastructure – Includes the plans for how a firm will build, deploy, use, and share its data, processes, and MIS assets ■ Hardware ■ Software ■ Network ■ Client ■ Server Supporting operations ■ Information MIS infrastructure Supporting change ■ Agile MIS Infrastructure Supporting the environment ■ Sustainable MIS infrastructure

Information MIS Infrastructure: -Backup and recovery plan -Disaster recovery plan -Business continuity plan Backup – An exact copy of a system’s information Recovery – The ability to get a system up and running in the event of a system crash or failure - Fault tolerance - Failover - Failback Disaster recovery plan – A detailed process for recovering information or an IT system in the event of a catastrophic disaster such as a fire or flood Disaster recovery cost curve – Charts (1) the cost to the organization of the unavailability of information and technology and (2) the cost to the organization of recovering from a disaster over time

Hot site – A separate and fully equipped facility where the company can move immediately after a disaster and resume business Cold site – A separate facility that does not have any computer equipment, but is a place where employees can move after a disaster Warm site – A separate facility with computer equipment that requires installation and configuration Business continuity planning (BCP) – A plan for how an organization will

recover and restore partially or completely interrupted critical function(s) within a predetermined time after a disaster or extended disruption Emergency – a sudden unexpected event requiring immediate action Emergency preparedness – ensures a company is ready to respond to an emergency in an organized, timely, and effective manner Technology recovery strategies Hardware ■ Servers ■ Computers ■ Wireless devices Software ■ Applications such as email ■ Payroll ■ Instant messaging Networking ■ ■ ■ ■

Wireless LAN Fiber Cable

Data center ■ Climate control ■ Power supply ■ Security

Business impact analysis – Identifies all critical business functions and the effect that a specific disaster may have upon them Technology failure – occurs when the ability of a company to operate is impaired because of a hardware, software, or data outage Incident – Unplanned interruption of a service

Incident management – the process responsible for managing how incidents are identified and corrected Characteristics of an agile MIS infrastructure ■ Accessibility ■ Availability ■ Maintainability ■ Portability ■ Reliability ■ Scalability ■ Usability -Accessibility – Refers to the varying levels that define what a user can access, view, or perform when operating a system Web accessibility – Allows people with disabilities to use the Web Administrator access – Unrestricted access to the entire system -Availability – Time frames when the system is operational Unavailable – Time frames when a system is not operating and cannot be used High availability – System is continuously operational at all times -Maintainability – How quickly a system can transform to support environmental changes Organizations must watch today’s business, as well as tomorrow’s, when designing and building systems Systems must be flexible enough to meet all types of business changes -Portability – The ability of an application to operate on different devices or software platforms -Reliability – Ensures a system is functioning correctly and providing accurate information Reliability is another term for accuracy when discussing the correctness of systems within the context of efficiency IT metrics

Vulnerability – a system weakness that can be exploited by a threat -Scalability – How well a system can scale up, or adapt to the increased demands of growth Performance – Measures how quickly a system performs a process or transaction Capacity planning – Determines future environmental infrastructure requirements to ensure high-quality system performance -Usability – The degree to which a system is easy to learn and efficient and satisfying to use Serviceability – How quickly a third-party can change a system to ensure it meets user needs and the terms of any contracts, including agreed levels of reliability, maintainability, or availability -----------------------------------------------------------------------------------------------Grid computing – A collection of computers, often geographically dispersed, that are coordinated to solve a common problem Virtualization – Creates multiple virtual machines on a single computing device Cloud computing – Stores, manages, and processes data and applications over the Internet rather than on a personal computer or server

(Virtualized Computing) Data center – A facility used to house management information systems and associated components, such as telecommunications and storage systems Sustainable data center ■ Reduces carbon emissions ■ Reduces required floor space ■ Chooses geographic location

Cloud Computing Example Five computers are labeled: ■ Gmail ■ Amazon EC2 ■ Windows Live ■ Mozy ■ Facebook The computers are shown contained within a cloud outline. Different devices each connect into the cloud, such as a laptop, cell phone, tablet, and computer. Multi-tenancy – The cloud means that a single instance of a system serves multiple customers Single-tenancy – Each customer or tenant must purchase and maintain an individual system Cloud fabric – The software that makes possible the benefits of cloud computing, such as multi-tenancy

Characteristics of Cloud Computing On-demand self-service – users can increase storage and processing power as needed Broad network access – all devices can access data and applications Multi-tenancy – customers share pooled computing resources Rapid elasticity – storage, network bandwidth, and computing capacity can be increase or decreased immediately, allowing for optimal scalability Measured service – clients can monitor and measure transactions and use of resources

Cloud Computing Environments Private cloud ■ ■ ■ ■

Single-tenancy On-premise One organization Example: Bank, government, corporation

Public cloud ■ Multi-tenancy ■ Off-premise ■ Several organizations ■ Example: Amazon E C 2, Windows Azure Community cloud ■ Multi-tenancy ■ Off-premise ■ Several organizations ■ Example: private hospital, all Colorado State government organizations Hybrid cloud ■ Mix of private, public, or community ■ Example: private cloud of the company and a public cloud for customers, suppliers, and partners

Cloud Service Delivery Models Infrastructure as a service ■ Offers computer hardware and networking equipment on a pay-per-use basis

■ Example: Amazon E C 2, Rackspace, V M ware, Google Cloud Storage Software as a service ■ Offers applications on a pay-per-use basis ■ Example: Salesforce dot com, Google Apps, Zoho, Hotmail Platform as a service ■ Offers hardware, networking, and applications on a payper-use basis ■ Example: Google Application Engine, Windows Azure, Amazon Elastic...