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back-up

A safety precaution against losing precious image or other electronic data. You can back-up one image file or an entire computer s worth of data. Back-up options include CDs/DVDs, external hard disk drives, and online storage sites such as Nikon Image Space Nikonimagespace.com website. If the original file(s) are lost or corrupted, you can restore them with a back-up copy.

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back-up

A safety measure that involves making a copy of a computer file so that the data is available to be restored in the event that the original becomes lost, corrupted or damaged. The file that s backed up may be a single image, a file folder filled with images or documents, or an entire computer drive.
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