On 31/08/17 07:51 AM, Wols Lists wrote:
Note that magnetism decays. If the drive has trouble reading something in a test, it should transparently rewrite it behind the scenes, and if that is the problem then it's fixed. No remapping or anything.
As I've said before, think of DRAM needing refreshing. And now drives are packing so much into such a small space, if the sector next to yours gets rewritten, some of the write can leak and damage your data. If that happens ten or twenty times your data is now unreadable ... (okay, it's a lot more reliable than that, but that's roughly what's going on :-)
LOL! Roll on the days when we have sub-atomic data storage, using the spin of each electron in orbit around each atom in a (probably) diamond (or other carbon crystalline) lattice. That's nice if you subscribe to the planetary model of atoms, as opposed to the probability density cloud model that is used to explain semiconductors. Hmm, it is also a model that makes valency theory (and hence all of chemistry) a lot easier to explain and put on a mathematical basis, as well as the operation of electrolytes. When I got to university and learnt this aspect of semiconductor theory a lot of the stuff that made no sense in high school chemistry now made sense. Not that it was any use to me from the POV of the next level of exams or my career mind you. You can bet these spin-polarized electrons are going to need a lot of refreshing! Why do I think of the stage jugglers that balanced lots of spinning plates on poles:http://livingflow.ca/wp-content/uploads/2016/01/spinning-plates-forest.jpg -- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org