What are the advantages and disadvantages of the installation methods our book describes?
Direct Installation "Cold Turkey"
Parallel Installation (Old system runs with the new)
Single Location "Pilot Approach"
Phases Installation "Staged Incremental"
Share examples of when each of these methods should be used. Defend your selection.
Under a direct installation method, which is also called Cold Turkey, all information is turned on, on the new system at the moment that the old system is turned off ("unplugged"). The main advantage and reason why this is used is if the applications/data on the new system are not compatible with the system/applications on the old system. It wouldn't therefore be possible to run both systems simultaneously, even for a short period of time. A disadvantage is that this method is time and resource consuming, and is therefore one of the least used methods. Even with it's disadvantages, it is the method that is the most successful when used, with the least amount of problems and issues with installation.
In a parallel installation, the old system isn't turned off, it continues to run with the new system. When management decides that it is safe to turn off the old system, it is then shut down. Because of the setup of this installation method, ...
This solution discusses the advantages and disadvantages of the installation methods listed.