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MMTK

Learn to safeguard against data loss with this multimedia training kit. Explore various risks, from simple information loss to catastrophic scenarios, and discover techniques like backups, archiving, compression, and developing backup policies.

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MMTK

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  1. MMTK Guarding against loss of data Multimedia Training Kit www.itrainonline.org

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

  3. 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 Multimedia Training Kit www.itrainonline.org

  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 Multimedia Training Kit www.itrainonline.org

  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 Multimedia Training Kit www.itrainonline.org

  6. 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) Multimedia Training Kit www.itrainonline.org

  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 Multimedia Training Kit www.itrainonline.org

  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. Multimedia Training Kit www.itrainonline.org

  9. Develop a backup policy • Develop a backup policy for yourself and/or your organization Multimedia Training Kit www.itrainonline.org

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