Fall back Plan

The fall back plan is an hour-by-hour schedule of instructions that are to be followed if the migration has not succeeded by a scheduled deadline. This deadline is a specific time by which the migrated system must be tested and verified. This deadline must also include enough time to return the system to the status that it was in prior to the migration, providing that the migration is not successful. Above all, the customer must have an operational system for normal business hours. This requires a plan that not only includes activities that are to take place during fall back, but also activities in advanced preparation for a fall back even if a fall back does not become necessary. Such preparations include:

• Labeling extracted boards, PROMs and the last system dump
• Preparing a list of verification tests that must be run on the reinstalled previous system before it can once again be considered fully operational