OCR Cambridge National in ICT (Level 1/2) R001 Understanding computer systems.
UNIT R001: Understanding Computer Systems
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Transcript of 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