INF20012 Enterprise Systems - Assignment 2

Assignment 2: System Analysis and Selection

5) A common practice with such IT projects, particularly the implementation of an ERP system and its associated modules, is to introduce elements in a planned sequence, replacing the old system gradually, i.e., one module at a time, such as human resources and inventory management. Another option is called the big bang, or live start, with all modules and related processes, launched simultaneously. Both options have potential risks and benefits. A gradual release entails fewer risks and allows end-users to become familiar with the new system more gradually; but it also means making interfaces required to maintain parallel systems – the old and the new – meaning that information processing has to be done twice. A big-bang implementation makes it possible to calibrate and stabilise the system much faster because it allows prompt online identification of possible inconsistencies. Additionally, since patients and doctors move between units, a phased or partial implementation – excluding some units, such as ER – would create problems. But a big- bang approach could also be risky. In the end, they decided to go with the big bang implementation method and at midnight on 31 December 2011, the balances were already loaded into SAP, and the old system was stopped. The green light was given to start.
What contingency plans should the SHF put in place throughout the hospital to avoid delaying critical patient care? List and describe two plans for the pre and two plans for the post-go-live phases (15 marks)