unit r001: understanding computer systems

UNIT R001: Understanding Computer

Systems

Storing Data

LO

Log on

Think about all the data that is stored about you (write it down)Create a diagram to show • What data is stored – my name• Where this data is stored – on a

computer• How it is collected – via twitter

LO

What is a back up?

• Find out• Draw a picture that represents a

back up

What is a back up?

• “An external second copy of the data that is stored away from the site”

• “making copies of data (your work) so that these second copies may be used to restore the original after a data loss event. “

• “These additional copies are typically called backups. ...

• iCloud, memory stick, dropbox, Xbox1, mobile phone

TEACHER TASK

• Task one students copy done a very important document

• Then take a picture of it compare the methods

How often should you back up?

When and Why?

• Always save a copy of the files• Use a pendrive, CD, portable hard

disk or suitable device.• Store in a safe place• Keep back ups regularly

LO

http://www.youtube.com/watch?v=pxGIwTxpKYI&feature=related

A video example

BACK UP METHOD

Investigate one of the following back up methods,

1. Full (easy)2. Incremental (medium)3. Differential, (a challenge)

When do you use it, how often, advantages / disadvantages, how long does it take?

Incremental

FilesOnly files modified are

copied

Full Back Up

Files All Copied

Differential

FilesAll files that are different since the last full back up

Grandfather Father Son

Grandfather Father Son

Make an Animation

• Create an animation showing how a back up works

• Include the methods• Frequency• Tips and trips