MEIE881 Architecture and Infrastructure Architecture ...

MEIE881 Architecture and Infrastructure

Architecture & Infrastructure
Define: client/server, server, thick client, thin client, mainframe, legacy system, peer-to-peer
Distinguish architecture from infrastructure
Discuss the relationship between strategy, business requirements, architecture, and infrastructure
Discuss the applicability of evaluation criteria to architecture and infrastructure
Analyze infrastructure and architecture needs across hardware, software, data and networks
Describe the purpose and steps in Business Continuity Planning
Define and describe SOA

Who needs IT Architecture and Infrastructure?

Strategy, Requirements, Architecture & Infrastructure
Strategy
Business Requirements
Architecture
Infrastructure

Information Architecture
High level map of info requirements; blueprint
Centralized:
data
communications
Decentralized:
focus on organizational function
Translates strategy into infrastructure
Hard to define: needs change

Information Infrastructure
Physical facilities, services, management supporting computing resources
hardware
Software
networks & communications
data
personnel

Managerial Considerations
Existing Architecture
Current & Future Requirements
Financial Issues
Technical Issues

Evaluation Criteria: Applicability

Evaluation Criteria: Applicability (cont)

Meta Group Guidelines for Adaptable IT A&I
Plan modular (independent and loosely coupled) vs. monolithic
Have clear boundaries between infrastructure components
With network architecture, provide access to all users when it makes sense to do so

Architecture Definitions
Mainframe- Computing environment in which a large central computer handles all system functionality
Peer-to-peer- Architecture that allows networked computers to share resources without a central server playing a dominant role
Client/Server Architecture
Wireless (Mobile)- Computing environment maintaining a data connection from a remote network using a wireless technology

Architecture Definitions - Client/server
Client - PC or workstation attached to a network which is used to access shared network resources
Server - machine that provides clients with services (i.e., sharing databases, software)
Thick client - full function stand-alone computer that is used either exclusively or occasionally as a client in a client/server architecture
Thin client - computer hardware designed to be used only as a client in a client/server architecture (Network PCs)

Service Oriented Architecture (SOA)
SOA - architectural design pattern that concerns itself with defining loosely-coupled relationships between producers and consumers.
Guiding Principles
Reuse, granularity, modularity, loosely coupled, and interoperability
Compliance to standards (both common and industry-specific)
Services identification and categorization, provisioning and delivery, and monitoring and tracking
http://br.youtube.com/watch?v=sbd_1G8Kqjs

Before and After SOA

Top 10 Mistakes When Implementing SOA ZDNet News, 1/17/08, Callahan
Taking a shotgun approach (can’t afford indiscriminate use)
Failing to involve business analysts (must consider business needs)
Spending more time on SOA products than SOA planning
Tackling the largest projects first (start with low-risk, smaller projects)
Forgetting that SOA is a business problem
Treating identity as an afterthought
Buying new products when exiting investments suffice (can usually use existing hardware and software with SOA products)
Misunderstanding company key players (know who ‘owns’ the data)
Expecting the SOA project to spread quickly (moving forward incrementally and carefully ensures the most reuse)
Lacking necessary elements (must have in-house resources or expertise to implement)
http://br.youtube.com/watch?v=0CbjUNzBV6I

Video – Vancouver International

Video Summary
Problem – Too Many Networks
Vision – Superior Airport
Implementation
Business Strategy – 2010 Olympics
Architecture – Wireless
Infrastructure – Cisco

Business Continuity Planning
Approved set of preparations and sufficient procedures for responding to a variety of disaster events
Stages
Pre-planning
Planning
Post-planning
Internal and external threats

MEIE881 Architecture and Infrastructure Architecture ...

by Zubin67 on May 06, 2010

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