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Heat is a hard drive's biggest enemy. I keep mine turned off and unplugged unless I'm using it. My laCie is 2.5 years old and no problems whatsoever.
 
Heat is a hard drive's biggest enemy. I keep mine turned off and unplugged unless I'm using it. My laCie is 2.5 years old and no problems whatsoever.

Ditto on the heat thing though.... my maxtor 100GB external with a generic enclosure is still working (although the soud the unit makes is comparable to a jet engine)
 
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