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whua? lasers? on rust? what for? (bad guess) thermal bulk erasure?

edit: found it: https://en.wikipedia.org/wiki/Heat-assisted_magnetic_recordi...

Lasers are dead. DOA, at least according to WD. Microwave Assisted Magnetic Recording (MAMR) is the next thing for rust. WD plans to start shipping MAMR drives in 2019.

see: http://www.anandtech.com/show/11925/western-digital-stuns-st...

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