SSDs have a valuable place in the world, but so do spinning disks. Physical size isn't a concern for my nas (I mean, assuming we're talking < 300cm^3 for the whole setup..), but $/tb is.
There was literally a headline on the front page here a few days ago re: data degradation of SSDs during cold storage, as one example.
Why is that? I'd have expected solid-state electronics to last longer at low temperatures.
Or is it precisely that, some near/superconductivity effects causing naughty electrons to escape and wander about?
High capacity hard drives nowadays use heat and strong magnetic fields to write patterns into the platter. It's pretty stable just sitting around doing nothing.
High density multi level NAND involves quantum tunneling a few electrons using a strong electric field into an electrically insulated bit of semiconductor. Over some time the electrons tunnel their way out, but usually this only ends up actually happening if too much writing damaged the insulation.
Or does the data decay there as well, just as a function of time since cells were written?
In other words, is this whole focus on "powered off" just a proxy for "written once" versus "live data with presumed turnover"? Or do the cells really age more rapidly without power?
SSD also has longer term data loss issues when unpowered. Magnetic disk is still better in that respect too.
Isn't 0.1TB a little too low? I'm sure if they only improved this little in 5 years the company would be in big trouble.
these 6.9TB platters are still in development and are not planned to be used for another 5 years.
Western Digital would like to have a word about shingled magnetic recording drives.
The ideal has been achieved. We need go no further.
Neywiny•1h ago
Wow so heat assisted magnetic recording is using heat to magnetically record data. Incredible explanation.
_wire_•58m ago
dylan604•18m ago
wmf•34m ago