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Jared
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Re: Momentus Thin ST500LT012

Sat Nov 28, 2015 11:21 pm

I have a theory about this, but not one I'll likely ever be able to prove. Here's my theory:

We all know that the heads/sliders glide on a cushion of air generated by the spinning motion of the platters. Given the extremely smooth surface of the platters and now even extra structures to keep airflow steady they glide at a pretty stable height. But, what would happen if something becomes a bit distorted, such as an imbalanced platter, a warped slider arm, or even a foreign object such as a large dust particle gets lodged under the slider or it's arm? I imagine that it'll often begin to vibrate violently and repeatedly hit/drag across the platter surface. In the process causing more damage, thus more distortion of the air flow and even further vibration. Might only take a few seconds to destroy the platter surface entirely at 7200 RPM. I imagine that this also explains why certain models (specifically Seagate) seem to succeed at killing heads over and over again.

Just a guess really, but the best theory I've got.

HaQue
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Re: Momentus Thin ST500LT012

Tue Dec 01, 2015 7:32 pm

someone needs to setup high speed cameras inside hard disks so we can all get a visual. I assume this would not be as simple as it sounds!

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LarrySabo
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Re: Momentus Thin ST500LT012

Tue Dec 01, 2015 7:49 pm

HaQue wrote:I assume this would not be as simple as it sounds!

Especially as the HSA is free-floating unless the lid is in place. I wonder if that has something to do with all the damage, i.e., HSA misalignment/sloppiness?

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