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Implementation and System Security

Archiving data

  • 3 things to know
  • AS Unit 1

Overview

Data archiving, archiving and backup by their purpose and retention period.

What you need to know

Answer each one before you reveal it.

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Key term

Why is file format obsolescence a problem for archives?

Key term

What is data archiving?

Key term

How does archiving improve the performance of a live system?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is data archiving?

    Model answer

    Data archiving is the transfer of data no longer needed from day to day onto separate long-term storage, from which it can be retrieved if it is ever required again.

  2. 2

    Give three reasons an organisation archives data.

    Model answer

    An organisation archives data to satisfy legal retention requirements, to free space and keep the live system fast, and to keep historical records available for later analysis.

  3. 3

    How does archiving improve the performance of a live system?

    Model answer

    Removing old records reduces the volume the live system has to search, index and back up, so queries return faster and routine housekeeping takes less time.

  4. 4

    Distinguish between archiving and backup by their purpose.

    Model answer

    One moves data out of the live system for long-term keeping and usually deletes the original, while the other copies data that is still in use so it can be restored after a loss.

  5. 5

    What is a retention period?

    Model answer

    A retention period is the length of time a type of record must be kept before it may be destroyed, and it is usually set by law or by the organisation's own policy.

  6. 6

    Why should archived data be catalogued?

    Model answer

    Archived data has no value if it cannot be found, so a catalogue records what each archive holds and where it is stored, allowing a particular record to be retrieved.

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