Lecture 12 - Distributed systems: The overall architecture. In this chapter, the following content will be discussed: Describes seven types of distributed systems, defines the overall IT architecture and, discusses the importance of IT infrastructure. | Distributed Systems: The Overall Architecture Lecture 12 1 Contents This lecture / chapter Describes seven types of distributed systems Defines the overall IT architecture and Discusses the importance of IT infrastructure 2 Contents Case examples include Northwest Airlines, an aerospace company, Chubb & Son Insurance Company, The SABRE Group, 3i, General Motors, FMC Corporation, Credit Suisse and the City of Sunnyvale Today’s Lecture Introduction Four Attributes of Distributed Systems When to Distribute Computing Responsibilities Two Guiding Frameworks 4 Today’s Lecture cont. Seven Types of Distributed Systems Host-Based Hierarchy Decentralized Stand-Alone Systems Peer-to-Peer LAN-Based Systems Today’s Lecture cont. Seven Types of Distributed Systems Hybrid Enterprise wide Systems Client-Server Systems Internet-Based Computing Web Services Today’s Lecture cont. Defining The Overall IT Architecture An Enterprise Architecture Framework The ‘Coming Architecture’: Service-Oriented . | Distributed Systems: The Overall Architecture Lecture 12 1 Contents This lecture / chapter Describes seven types of distributed systems Defines the overall IT architecture and Discusses the importance of IT infrastructure 2 Contents Case examples include Northwest Airlines, an aerospace company, Chubb & Son Insurance Company, The SABRE Group, 3i, General Motors, FMC Corporation, Credit Suisse and the City of Sunnyvale Today’s Lecture Introduction Four Attributes of Distributed Systems When to Distribute Computing Responsibilities Two Guiding Frameworks 4 Today’s Lecture cont. Seven Types of Distributed Systems Host-Based Hierarchy Decentralized Stand-Alone Systems Peer-to-Peer LAN-Based Systems Today’s Lecture cont. Seven Types of Distributed Systems Hybrid Enterprise wide Systems Client-Server Systems Internet-Based Computing Web Services Today’s Lecture cont. Defining The Overall IT Architecture An Enterprise Architecture Framework The ‘Coming Architecture’: Service-Oriented Architecture The Importance of the IT Infrastructure The Structure of the IT Infrastructure Three Views of Infrastructure 7 Introduction - Definitions An IT architecture is a blueprint. A blueprint shows how a system, house, vehicle, or product will look and how the parts interrelate Lately = rather than talk about hardware, software, data, communications etc. as the components of computing, some people now refer only to applications and infrastructure 8 Introduction – Definitions Cont An IT infrastructure is the implementation of an architecture. The IT infrastructure includes the processors, software, databases, electronic links, and data centers as well as the standards that ensure the components work together, the skills for managing the operation etc. Introduction – The Evolution of Distributed Systems First IT architecture = mainframes (batch processing) with dumb terminals (no processing capabilities) With minicomputers = moved into departments but the ‘master-slave’ computing .
