Implementing a new system 3.0 / 5 based on 1 rating ? ICTComputer systems and mobile technologiesGCSEAQA Created by: milodoesgcsesCreated on: 27-04-17 12:27 Different types of changeover Parallel running; Pilot changeover; Direct changeover; Phase changeover 1 of 5 Parellel running New system and old system are used side by side - old system turned off only once the new system is fully functional. (Safest option) 2 of 5 Pilot changeover Works for large companies. System is rolled out in a subsection and after all faults have been fixed it is released to the whole company. 3 of 5 Direct changeover Immediate change - Best suited when the old system is critically misfunctional (Working very poorly). (Riskiest option) 4 of 5 Phase changeover Slow change from old to new, releasing system in parts. Minor problems are worked around but major problems reschedule the roll out (phase model). 5 of 5
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