Chapter 5: Business Benefits of a Solid MIS Infrastructure PDF

Chapter 5 The Business Benefits of A Solid MIS Infrastructure MIS Infrastructure - includes the plans for how a firm will build, deploy use, and share its data, processes, and MIS assets ○ Hardware - Physical device ○ Software - The set of instructions the hardware executes ○ Network - A communicati...

Chapter 5 The Business Benefits of A Solid MIS Infrastructure MIS Infrastructure - includes the plans for how a firm will build, deploy use, and share its data, processes, and MIS assets ○ Hardware - Physical device ○ Software - The set of instructions the hardware executes ○ Network - A communications system created by linking two or more devices and establishing a standard methodology in which they can communicate ○ Client - A computer designed to request information from a server ○ Server - A computer dedicated to providing information in response to requests Enterprise Architect - A person grounded in technology, Fluent in Business, and able to provide the important bridge between MIS and the business Supporting Operations ○ Information MIS insfrasture Supporting Change ○ Agile MIS insfrasture Supporting the Environment ○ Sustainable MIS infrastruture Supporting Operations: Information MIS Infrastructure Backup and Recovery Plan Disaster recovery plan Business Continuity plan (BCP) Backup and Reovery 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 - A general concept that a system has the ability to respon to unexpected failure or system crashes ○ Failover - A redundant storage server offers an exact replica of the real-time data ○ Failback - when the primary machine recovers and resumes operations Disaster recovery plan - a detailed process for recovering information or an it system in the event of a catastrophic disaster such 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 organziation of recovering from a disaster over time. Hot site - A seperate and fully equipped facility where the company can move immediately after a disaster and resume business Cold site - A separate facility with computer equipment that requires installation and configuration Business continuity plan Business continuity planning (BCP) - A plan for how an organization will recover and restore partially o rcompletely interrupted critical functions within a predetermined time after a disaster or extend disruption Business impact analysis - Identities all critical business functions and the effect that a specific disaster may have upon them Supporting Change: Agile MIS infrasture Characteristics of an agile MIS infrastructure ○ Acessbility ○ Avaibility ○ Maintainbility ○ Portability ○ Realiability ○ Scalability ○ Usability Accesbility Accessbility - 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 Adminstrator access - unrestricted access to the entire system Availability Availbility - time frames when the system is operational Unavailability - time frames when a system is not operating and cannot be used High availability - System is continuously operational at all times Maitanbility Maintability - 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 Portability - the ability of an application to operate on different devices or software platforms Realibilty Reability - Ensures a system is functioning correctly and providing accurate information ○ Reability 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 infrastrure requirements to ensure high-quality system performance Usability Usability - the degree to which a system is easy to learn and efficient and satisfying 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 levwels or reliability, maintability, or availability MIS and the Environment Moore’s law - The performance of a computer chp per dollar doubles every 18 months Sustainable, or “green,” MIS - Describes the production, management, use, and disposal of technology in a way that minimzes damage to the environment Corporate social responsibility - Companies’ acknolowledged responsibility to society Three pressures driving sustainable MIS infrastructures 1. Carbon Emissions Includes the carbon dioxide and carbon monoxide produced by business processes and system 2. Energy Consumptions The amount of energy consumed by business processes and systems 3. Ewaste Discarded, obsolete, or broken electronic devices Sustainable MIS Infrasture components 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 on a personal computer or server Cloud computing example Cloud computing Multi-tenancy - 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 the benefits of cloud computring, such as Multi-tenancy possible. 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 EC2, Windows Azure Hybrid Clould ○ Mix of private, public, or community ○ Example: private cloud of the company and a public cloud for customers, suppliers and partners Community Clould ○ Multi-tenancy ○ Off-premise ○ Several organizations ○ Example: private hospital, all colorado state government organizations Cloud service Delivery Models Infrasture as a service ○ Offers computer hardware and networking equipment on a pay-per-use basis ○ Example: Amazon EC2, Rackspace, VMware, Google Clould storage Software as a service ○ Offers application on a pay-per-use basis ○ Example: Salesforce.com, Google Apps, Zoho, Hotmail Platform as a service ○ Offers hardware, networking, and applications on a pay-per-use basis. ○ Example: Google Application Engine, Windows Azure, Amazon Elastic.