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Implementation and System Security

Pilot and phased changeover

  • 3 things to know
  • AS Unit 1

Overview

Pilot changeover, phased changeover and four changeover methods.

What you need to know

Answer each one before you reveal it.

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Key term

Describe pilot changeover.

Evaluation

Give two advantages of pilot changeover.

Evaluation

Give two disadvantages of pilot changeover.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Describe pilot changeover.

    Model answer

    In pilot changeover the whole new system is introduced in one part of the organisation first, such as a single branch or department, while everywhere else carries on with the old system.

  2. 2

    Give two advantages of pilot changeover.

    Model answer

    A problem affects only the pilot site rather than the whole organisation, and the staff there become experienced users who can help train everyone else.

  3. 3

    Give two disadvantages of pilot changeover.

    Model answer

    The full rollout takes a long time because it waits for the pilot to be evaluated, and running two different systems in different parts of the organisation is awkward to manage.

  4. 4

    How is a pilot site chosen?

    Model answer

    A pilot site is chosen to be typical enough for its results to apply elsewhere, while being small enough and low enough in risk that a failure there would not damage the organisation.

  5. 5

    Describe phased changeover.

    Model answer

    In phased changeover the new system is brought in one part at a time across the whole organisation, so one function moves over, is proved, and then the next follows.

  6. 6

    Give two advantages of phased changeover.

    Model answer

    Training and support can be concentrated on one function at a time, and a fault affects only the part that has just moved rather than everything at once.

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