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1242.2219 Information System Economic s IT MAINTENANCE MANAGEMENT

1242.2219 Information System Economic s IT MAINTENANCE MANAGEMENT. IT MAINTENANCE MANAGEMENT. The Elements of IT Maintenance Management Strategy Hardware Software Applications System software Networks Data and system integrity. IT MAINTENANCE MANAGEMENT.

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1242.2219 Information System Economic s IT MAINTENANCE MANAGEMENT

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  1. 1242.2219 Information System Economics IT MAINTENANCE MANAGEMENT

  2. IT MAINTENANCE MANAGEMENT • The Elements of IT Maintenance Management • Strategy • Hardware • Software • Applications • System software • Networks • Data and system integrity

  3. IT MAINTENANCE MANAGEMENT An IT Maintenance Strategy The maintenance strategy should isolate users as much as possible from service disruptions and system changes. The proper maintenance of hardware, software, communications, and data is essential to assure smooth operations.

  4. IT MAINTENANCE MANAGEMENT • HARDWARE • Managing capacity • Monitoring • Maintaining balance • How much slack? • Managing changes in technology • Sources of information • Vendors • Technology journals • Industry journals • Consultants

  5. IT MAINTENANCE MANAGEMENT • HARDWARE • Managing changes in technology (cont’d) • Migration • non-disruptive • maintains compatibility • Technical maintenance • contracts • levels of service • cost

  6. IT MAINTENANCE MANAGEMENT THE SOFTWARE LIFE CYCLE cost 20-40% of life cycle cost 60-80% of life cycle cost implementation programming and maintenance design analysis elapsed time

  7. IT MAINTENANCE MANAGEMENT • SOFTWARE • environmental scanning • vendors • support • viability • product plans • maintenance agreements • service levels • cost • client responsibilities • period covered

  8. IT MAINTENANCE MANAGEMENT • SOFTWARE • change management • program changes controlled and impact assessed • maintenance sign-off • data administration sign-off • user sign-off • version control • change documentation

  9. IT MAINTENANCE MANAGEMENT SOFTWARE Corrective Maintenance Procedures

  10. IT MAINTENANCE MANAGEMENT SOFTWARE Some IBM Software Maintenance Terminology Program Temporary Fix The patch supplied by IBM to remedy a (PTF) problem. This must be applied by the systems programmers. Authorized Program a) request by a user to have a problem resolved Analysis report (APAR) b) a patch similar to a PTF, usually not quite as complex, that fixes the problem. Program Update Tape A magnetic tape containing all of the fixes (PUT) applicable to a given operating system for a specific period of time (usually a month). System Modification A software program written by IBM to apply Program (SMF) all software maintenance to the system (MVS). Installation Productivity Interactive product that assists the systems Option (IPO) programmer in installing an operating system

  11. IT MAINTENANCE MANAGEMENT • SOFTWARE • The Problem of Legacy Systems • origins of the problem - varying life cycles • evaluating the problem • importance of the application • dependence on obsolete infrastructure • degree of change necessary

  12. IT MAINTENANCE MANAGEMENT SOFTWARE Legacy Systems - Degree of Change Necessary rewrite replace w. package rejuvenate reengineer refurbish restructure low high

  13. IT MAINTENANCE MANAGEMENT SOFTWARE Methods of Conversion to New systems

  14. IT MAINTENANCE MANAGEMENT • NETWORKS • Elements of Network Maintenance • Fault handling • Performance monitoring • Change management • Capacity planning • Cost control

  15. IT MAINTENANCE MANAGEMENT • Data and System Integrity • Clean up data definitions • Control shared data • Manage data distribution • Maintain data quality

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