A back-up power source and a back-up storage device are utilized to power a processor and a volatile memory device during a primary power failure. An emergency data-storage algorithm is invoked to create a table of modified data analogous to data residing in a non-volatile memory device associated with a different processor. This table of modified data is written to the back-up storage device.

 
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> Data storage device and method of erasing data stored in the data storage device

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