What Is A Change Over Method

2. What Is A Change Over Method ? • Note to Video Developer: Can we animate the curved arrows, rotate • slowly during narration? • Note to Narrator: Pause briefly after each bulleted section and • speak slowly enough for viewers to follow the • steps. • Narration text: Welcome to the video training session. In the • session, you will learn about changeover methods. • As a reminder, you can pause the session at any time , • or go back to review an earlier section. Now • let’s get started • System changeover is the process of • putting the new information system online • and retiring the old system. • Changeover can be rapid or slow, • depending on the method. • The four changeover methods are direct • cutover, parallel operation, Pilot • operation, and phased operation.

3. New System Old System Direct Cutover Old System New System Parallel Operation New System Old System Pilot Operation Old System New System Phased Operation Note to video developer: Can we bring in the four images one at a time, per the narration? Note to narrator: Pause briefly after each bulleted section and speak slowly enough for viewers to follow the steps. Narration text: Let’s look at each method, and consider some pros and cons. • Direct cutover is similar to throwing a switch that instantly changes over from the old system to the new. This method is fast, but the most risky. • Parallel operation requires that both systems run simultaneously for a specified period, which is the slowest method, but the safest. • Pilot operation changeover involves implementing the complete new system at a selected location. This is like direct cutover, but only at a single location, so the risk is limited. • Phased operation changeover allows you to implement the new system in stages, or modules. This is like parallel operation, one phase at a time. The risk only involves one phase at a time.

4. Which Method would you use? • Example: • Mission-critical corporate accounting system • Franchise operation with 500 locations • Records archive system for five-year old data Note to video developer: Can we show the three bulleted examples one at a time, per the narration? Note to narrator: Pause briefly after each bulleted section and speak slowly enough for viewers to follow the steps. Narration text: Now let’s take three specific examples, and see which method we might choose: • Mission-critical corporate accounting system In this example, the primary goal is to minimize the risk. All other issues are secondary. This would be a good situation for parallel operation, which is slower, but involves the least risk. • Franchise operation with 500 locations Here, if we choose pilot operation, we can evaluate the entire system, but at a single location. If all goes well, we can implement at other locations, or make necessary changes. • Records archive system for five-year old data In this example, we can tolerate some risk. Because the old data is archived and not mission-critical. We can probably reduce costs and speed up the process by using direct cutover.