1.1.5 Installation Methods and Their Evaluation Notes

Installation Methods and Their Evaluation

Due to the potential organisational issues, various methods exist for introducing a new system into the environment.

Parallel Running

1. Advantages:
   1. Low Risk: If the new system fails, the old system is still operational.
   2. Validation: Outputs from both systems can be compared to ensure accuracy.
2. Disadvantages:
   1. High Cost: Maintaining two systems increases operational expenses.
   2. Increased Workload: Employees must manage both systems, which can be a time-consuming task.

Direct Changeover (Big Bang approach)

1. Advantages:
   1. Cost-Effective: Only one system is operational at a time.
   2. Quick Implementation: The transition is fast, minimising disruption.
2. Disadvantages:
   1. High Risk: If the new system fails, there is no backup.
   2. Requires Thorough Testing: Extensive testing and training are essential before implementation.

Pilot Running

1. Advantages:
   1. Low Risk: Issues can be identified and resolved in the pilot phase.
   2. Scalable: Successful implementation at the pilot site can be replicated across the organisation.
2. Disadvantages:
   1. Time-Consuming: The full rollout can take longer.
   2. Resource Intensive: Requires dedicated resources for the pilot phase.

Phased Conversion

1. Advantages:
   1. Reduced Risk: Issues can be addressed in each phase before moving to the next.
   2. Manageable Training: Employees can be trained gradually.
2. Disadvantages:
   1. Extended Timeline: The whole implementation process can be lengthy.
   2. Complex Integration: Ensuring compatibility between old and new system modules can be a challenging task.

Training Implications of Installation Methods

1. Parallel Running: Employees must be trained on both systems, increasing the training workload.
2. Direct Changeover: Comprehensive training is required before the switch to ensure a smooth transition.
3. Pilot Running: Initial training is concentrated on the pilot group, who can later assist in training others.
4. Phased Conversion: Training is conducted in stages, aligning with the implementation of each module.

Evaluating Installation Methods

1. Risk vs. Cost:
   1. Parallel Running: Low risk but high cost.
   2. Direct Changeover: High risk but cost-effective.
2. Time vs. Complexity:
   1. Pilot Running: Moderate time and complexity.
   2. Phased Conversion: Extended time but manageable complexity.
3. Organisational Impact:
   1. Consider employee resistance and the need for training and support during the transition.