Mr C Johnston ICT Teacher www.computechedu.co.uk 4/25/2017 BTEC Unit 29 – Lesson 01 To Upgrade or Not Upgrade… That is the Question Mr C Johnston ICT Teacher www.computechedu.co.uk

4/25/2017 Session Objectives Understand the reasons why we install and upgrade software, Understand factors which must take into consideration when deciding on whether to go ahead with an installation or upgrade.

Why change / upgrade your software?? 4/25/2017 Why change / upgrade your software??

Prompts for Change Problems with existing systems, 4/25/2017 Prompts for Change Problems with existing systems, Out-dated, vulnerable, no longer supported, incompatible Additional functionality required, Sometimes an upgrade, sometime complete new installation New hardware requiring new or upgraded software, New drivers, new OS External prompts for software bug fixes, Often automatic updates to patch bugs Other e.g. company policy Upgrade period, meet industry standards so compatible

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4/25/2017 Justifying Change Just because there is a prompt for change, it doesn't mean that an organisation will do it. Costs are involved including: Cost of the software, training, down-time needed to install, incompatibility issues However there are also benefits including: Easier to use, able to do more, improved system security It is important that there is a good business case made for the change to go ahead. Perceived benefits must be shown to outweigh the costs of the new software or upgrade before it can go ahead.

Perceived costs outweigh the benefits 4/25/2017 The Change Seesaw BENS Perceived costs outweigh the benefits COSTS X

Perceived benefits outweigh the costs 4/25/2017 The Change Seesaw COSTS Perceived benefits outweigh the costs BENS

4/25/2017 Justifying Change

Justifying Change 4/25/2017 +ve -ve Could run faster May run slower as requires more system resources Better ways of completing tasks will lead to better productivity May need additional training o users can run the software - additional expense, mistakes, slow productivity whilst getting used to it Old bugs and faults fixed May be new bugs and faults to deal with May be compatible with existing hardware??? May not be compatible with existing hardware – old system might not support new May not work properly Support and updates for foreseeable future Support and updates may have ceased Organisation policy may be to update every so many years

4/25/2017 BTEC Book – Unit 29 pp4-5

4/25/2017 P1, M1, D1 Evidence This task requires you to write a short report explaining the rationale behind changing software. P1 requires you to describe why you might consider to upgrade software, M1 needs you to explain the advantages and disadvantages of installing and upgrading software, For the award of D1 you need to use the content already considered to justify why the antivirus software, used by the charity needs upgrading.

D1 - justify a particular installation or upgrade 4/25/2017 P1 – describe the potential prompts that initiate the installation of new or upgraded software M1 - explain the advantages and potential disadvantages of installation or upgrade of new software D1 - justify a particular installation or upgrade For P1 a paragraph or two describing the different prompts which have been looked at will meet this criterion – remember describe means give a detailed account. For M1 a table comparing the advantages and disadvantages of installations and upgrades would help to meet this criterion. Explain means you need to give a reason for a point being an advantage or disadvantage For D1 you need to apply the theory learnt in P1 and M1 to the situation given and give a good business case for or against the upgrade. Think about as many of the aspects covered in the unit so far and include them all within your recommendation.

Risks of Change Potential loss of service Incompatibility issues 4/25/2017 Risks of Change Potential loss of service Downtime – depends of what doing Time to adapt to new software – training required Incompatibility issues Old application software not compatible with new OS Drivers not compatible Hardware not compatible Old file formats not read by new software (unlikely as normally backwards compatible)

Risk Reduction Measures 4/25/2017 Risk Reduction Measures Backups Before you start make a backup of all data and software – can roll back if goes wrong – using imaging software is good Install at low risk times Overnight, weekends, annual shut down – downtime doesn’t matter as business not functioning - allows time to solve any problems without pressure, Incremental install Install on a few systems first then roll it out gradually across all. If problems do arise only a few computers are affects not entre system, Test it first Have a test environment which mimics the real system so can see the effects before changes are rolled out

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4/25/2017 P2, D2 Evidence This task requires you to expand the short report written for P1/M1/D1 which explains the rationale behind changing software. P1 requires you to describe the potential risks of installing or upgrading software, For the award of D2 you need to use evaluate the impact of each risk (is it worth the risk or not??) and explain how the effects of the risk could be minimised.

P2 – Describe the potential risks of installing or upgrading software. 4/25/2017 P2 – Describe the potential risks of installing or upgrading software. D2 - Evaluate the risks involved in the installation or upgrade of software and explain how the risks could be minimised. P2 requires you to broadly consider what risks can occur rather than restricting the purpose to a particular system. You can use the internet to research the risks of installing and upgrading software. To achieve P2 you only need to write a paragraph to identify and describe each risk. D2 is likely to take the form of a written report – it needs to evaluate the risks and explain how to minimise their effects. Remember evaluate means give an opinion based on good and bad points whilst explain means give reasons