Guarding against loss of data

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Presentation transcript:

Guarding against loss of data MMTK Guarding against loss of data Sunday, February 17, 2019Sunday, February 17, 2019 Multimedia Training Kit www.itrainonline.org

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 www.itrainonline.org

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 www.itrainonline.org

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 www.itrainonline.org

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 www.itrainonline.org

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 www.itrainonline.org

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 www.itrainonline.org

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 www.itrainonline.org

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

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