Re: Now you can lose 8TB of data in one shot instead of just 4!
"Spinning disk will die quickly once flash gets large enough."
The economics simply aren't there and won't be for the foreseeable future. Flash either cheaps out but loses longevity or sticks with longer-term chips that are an order of magnitude more expensive per TB. For bulk storage that must still be randomly-accessible, there's no substitute for spinning rust. Otherwise, said alternative would be in the consumer sphere as a backup medium (tape's currently enterprise-oriented and too expensive while opticals are too small a capacity relative to today's drive capacities--it would take around 20 dual-layer BD-R's to store the capacity of a 1TB hard drive and those discs will inevitably have longevity issues). Frankly, I would LOVE to see something other than spinning rust as a medium-term consumer archival medium, but I'm not seeing it.