1 / 15

Conversion Strategies

Conversion Strategies. Four Possible Methods. Abrupt Cutover Parallel Conversion Location Conversion Staged Conversion. Abrupt Cutover. As of a specific date the new system is installed.No Looking Back Previous versions of the text called this the “Crash” method. Abrupt Cutover Advantages.

moniquea
Télécharger la présentation

Conversion Strategies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Conversion Strategies

  2. Four Possible Methods • Abrupt Cutover • Parallel Conversion • Location Conversion • Staged Conversion

  3. Abrupt Cutover • As of a specific date the new system is installed.No Looking Back • Previous versions of the text called this the “Crash” method.

  4. Abrupt Cutover Advantages • Lowest Cost (If it works) • Ensures everyone uses new system • Benefits achieved at earliest possible time

  5. Abrupt Cutover - Disadvantages • Highest Risk

  6. Parallel Conversion • Run both the old and new systems for a specified period of time.

  7. Parallel Conversion Advantages • Safest Method • Major problems resolved before implemented

  8. Parallel Conversion - Disadvantages • Highest Cost • High Demand on Resources • Potential to “hang on’ to old system

  9. Location Conversion • May convert with one (or more) locations at a time • First site is called a “Beta” site

  10. Location Conversion - Advantages • Minimizes Risk • Bugs worked out at first location • Remaining sites can usually convert by abrupt method.

  11. Location Conversion _ Disadvantages • Delays benefits • Increased Cost • Must co-exist with existing system • Implementation Team committed longer • Costs higher

  12. Staged Conversion • Various portions or versions of the system are installed one a t a time • Each version is installed as it becomes available

  13. Staged Conversion - Advantages • Relatively safe • Able to resolve problems on a limited scale • Minimizes immediate impact on users

  14. Staged Conversion - Disadvantages • High Cost • Resources committed Longer • Must maintain previous systems • Benefits Delayed • Problems encountered in new releases may require correcting previous systems implemented

  15. Reminder • Your team must select one or a combination of these methods for your team project

More Related