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MMTK

MMTK. Guarding against loss of data. Session overview. Introduction: understanding the risks Guarding against simple loss of information Guarding against catastrophic loss of information - backups. Introduction. Loss of information may mean Irreplaceable loss of work Identity theft

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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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