| The Need for Backing Storage | ||
| Computer Memory (RAM)
is volatile -
This means that when the power is switched off, any data stored in memory will be lost. Backing storage allows data to be saved permanently.
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RAM is often not large enough to store large data files. Backing storage
allows large quantities of data to be
stored.
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| It is most important that backups
are made of important data in case it becomes lost or damaged. Backups
will be saved on a backing storage medium (tape, disc etc)
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| When data is no longer required it may be archived
... kept in long-term storage.
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These archived files may be kept for many years. | |
| Exercise : The Need for Backing Storage | ||
| Backing storage allows quantities of data
to be stored, which be lost when the power is switched off.
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| (Green indicates success) | ||
