Watch the YouTube video (http://www.youtube.com/watch?v=cTivTQFrLmE) and make notes on what a full, incremental and differential back up is.
A full backup involves making a copy of all the files on the system.
A differential backup is a cumulative backup of changes made since the last full backup. Every day the differential back up is made, the system adds further data that has changed since the last full backup.
This type of backup backs up the files which have changed since the last full backup. This type of backup is useful because it is possible to habe an adult trail of the file changes.
Type of Back Up
Time taken to Perform
Slow – but depends on amount of data you want to back up slow large
slow fast large
fast slow large
Topic 6: Data & Recovery (Make notes for revision)
What is a backup strategy?
A backup strategy is a plan of taking backups it also covers how you would recover data if it does get lost.
What are the 6 backup strategies? Provide descriptions of which each involves…
When- how often backups are taken
What- You have to decide what you want to back up
How- how the data is backed up depends on the amount of storage capacity