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Flash memory advantages over rotational data storage

I need help. What is rotational data storage and what are the flash memory advantages over rotational data storage?

That term's a new one on me but based on the context that it's being used, I would say that they are comparing flash memory with anything that spins (disk/tape, etc.). Flash memory has no moving parts BUT, it's a whole lot more expensive.

I suppose you could use the two in similar ways now that 512 MB/1 GB flash memory units are out. You could use the 1 GB unit to back up your My Documents directory or something and you wouldn't have to worry about moving parts.

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