1. Guarding against loss of data
MMTK
Guarding against loss of data
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

2. Multimedia Training Kit www.itrainonline.org
Session overview
Introduction: understanding the risks
Guarding against simple loss of information
Guarding against catastrophic loss of information - backups
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

3. Multimedia Training Kit www.itrainonline.org
Introduction
Loss of information may mean
Irreplaceable loss of work
Identity theft
Risks include
Accidental deletion of files
Computer faults damaging information
Theft of computers
Physical damage to computers
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

4. Simple loss of information
Limited loss e.g.
You accidentally delete or overwrite a file
Crashes corrupts the file you are working on
Power failure causes you to lose the file you are working on
Address this by
Using auto-save option
Restoring files from trash/recycle
Demonstrate in program relevant to group.
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

5. Catastrophic loss of information
Large scale loss or damage caused by
User can delete large areas of files or parts of the operating system
Fault with the operating system
Hardware fault
Computer theft
Power surge
Physical events such as fire and vandalism
Backing up is a primary line of defence
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

6. Multimedia Training Kit www.itrainonline.org
Backing up
Backing up: making copies of information stored in the computer
Storage media:
CD / DVD writers
Zip drives
Removable hard drives
Tape drives
Copying data over a network
Web-based backup services
Software and techniques
Copy
Compress (e.g. with WinZip)
Use backup software (full or differential backup)
Explain the relative advantages of different storage media.
Demonstrate one or more software options
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

7. Segregating data for backup
Organize your data
Keep your “workspace” separate from system files
Keep data which does and does not need to be backed up separate
Separate high- and low sensitivity data
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

8. Archiving and compression
Compression reduce the size of files by removing repeated sequences of data
An archive is a single file which contains a collection of smaller files
Archiving tools such as WinZip combine a collection of files into a single file, and the file at the same time.
Demonstrate WinZip or a similar tool
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit

9. Develop a backup policy
Develop a backup policy for yourself and/or your organization
Sunday, February 17, 2019Sunday, February 17, 2019
Multimedia Training Kit