Installation Methods

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  • Created by: Joseph
  • Created on: 07-05-13 09:39
What is Parallel Installation?
The old and new systems run concurrently with one another. The old system is only disgarded when they know the new system is capabile, accurate and reliable.
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Give 2 advantages of Parallel installation.
If there is a problem with the new system the old system can be used instead. Little or no detrimental effect on an organisation.
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Give 3 disadvantages of parallel installation.
Data is duplicated. Staff have to undertake tasks twice. Inconsistencies have to be checked and errors have to be located.
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What is phased installation?
Different systems are brought online in different sections one by one. At first only using selected sections to with the new system. Once there is confidence in the new system they roll it out across the organsiation.
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Give 2 advantages for a Phased installation.
If a bug or problem is found the comapny can still function on the old system.
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Give 4 disadvantages for a Phased Installation.
Could double the workload. Hard to move projects or data between the departments with the old system and ones with the new system. Impementation is dragged out. Expensive in terms of staff costs.
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Describe Pilot Installation.
Certain tasks are carried out on the new system or certain sections use the new system. Once the organisation feels safe in using the new system they then roll it out across the company.
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Give 2 disadvantages for pilot installation.
If a bug is found it can easily be fixed before the continuing the implementation. Limits of detrimental effects to the organsation.
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Give 3 disadvantages of Pilot installation.
Tasks that do work in the new system may be causing the same issues in the old system. Implementation takes a long time. Very expensive.
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Describe Direct Installation.
New system completly replaces old system.
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Give an advantage of direct installation.
Cheapest.
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Give a disadvantage of direct installation.
Problems or bugs may lead to a complete loss of data and potential faliure of the organsiation.
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Other cards in this set

Card 2

Front

Give 2 advantages of Parallel installation.

Back

If there is a problem with the new system the old system can be used instead. Little or no detrimental effect on an organisation.

Card 3

Front

Give 3 disadvantages of parallel installation.

Back

Preview of the front of card 3

Card 4

Front

What is phased installation?

Back

Preview of the front of card 4

Card 5

Front

Give 2 advantages for a Phased installation.

Back

Preview of the front of card 5
View more cards

Comments

Mr A Gibson

This is worth printing out and using to test knowledge of installation methods for new systems. Covers definitions, advantages and disadvantages.

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