This may be usefull

[duma]

PLZ dont flame i know about EMI this is just putting out a fact they may or may not be usefull

The magnet called Neodymium looses all magnetic propertys at 178 degrees FARENHEIT.

Ill just let you guys decide how if, it can be used.

 

[duma]

it is also the worlds most powerfull permanent magnet and is what the mag inside a hdd is made of

 

[herringtonjc]

Sort of curious, you never said if this is useful/helpful. What exactly is this thread for?

 

[duma]

This has potential to somehow be used as a failsafe since usualy the safety limit with temperature is 165 faranheit

an idea for when you have plug and play HDDs that run very hot you could code a microcontroller so that when the (very VERY small) magnet falls off the HDD the power to the drive will be cut.