131–140 of 256 posts
Interesting side effect, this also gives us some clue about what kind of ... information storage devices we should be looking for in other heavenly bodies. Had we found a bunch of silicate glass pebbles in Europa, we'd have considered them a curiosity. After this, we have good reason to find a way to ship it back and have another look.
Seems a bit of a waste to dedicate an entire 360TB disc to a single text document like a bible, which is probably just a few KBs... /s More seriously, they don't talk about reading capabilities (retrieval speed etc). And what if it gets scratched? What is the error tolerance? At that density, a single speck of dust could have dramatic implications... I hope this reaches industrial viability, because we desperately ne…
What if HDD platter gets scratched? What if SSD memory gets scratched? What if gets ?
> What if gets ?
It's more like "How much X damage can storage Y tolerate before losing Z amount of data?" You evaluate the different tech then you pick the best option.
Maybe some of this could be mitigated with logical techniques (e.g. make data redunant over 2 or 3 different parts of the disc, sacrificing capacity for durability), but it really depends on whether the process allows for this or completely borks out as soon as a scratch happens. They don't say anything about that and I think it's a pretty important aspect of any long-term storage solution.
Earlier quoted context omitted.
Yeah, actual museum-grade archival is so much more than just having an aging-resistant media. You also need to be able to read and decode it many years into the future, which is really tricky to guarantee - you can't assume the future generations will know how to make a reading device and remember your formats/encodings. So it's a bit like unzip.zip problem.
>You also need to be able to read and decode it many years into the future, which is really tricky to guarantee Not really, those future people don't just come out of nowhere. It's a gradual, incremental change as there are still systems using tape storage the technology or formats are not lost but migrated.
Does anyone know a resource which explains the theoretical limit for retrievable, durable, information storage? I would assume the most dense medium possible would be a collection of neutrons, since neutron stars are the most dense object other than a black hole, but retrieving information from them doesn’t seem feasible.
"'Dragon's Egg' is a 1980 hard science fiction novel by Robert L. Forward. In the story, Dragon's Egg is a neutron star with a surface gravity 67 billion times that of Earth, and inhabited by cheela, intelligent creatures the size of a sesame seed who live, think, and develop a million times faster than humans. Most of the novel, from May to June 2050, chronicles the cheela civilization beginning with its discovery o…
Seems a bit of a waste to dedicate an entire 360TB disc to a single text document like a bible, which is probably just a few KBs... /s More seriously, they don't talk about reading capabilities (retrieval speed etc). And what if it gets scratched? What is the error tolerance? At that density, a single speck of dust could have dramatic implications... I hope this reaches industrial viability, because we desperately ne…
What would IMO be a better solution is something like the pyramids - something huge, with a lot of data written down / chiseled in without any weirdness like parity bits or binary code, and a lot of redundancy. Imagine the pyramids but made out of modern materials, resistant to erosion and earthquakes. Ceramics? Silicon? Either way it'd have to be legible without the need of a microscope or computers. Write the same…
https://www.theatlantic.com/technology/archive/2017/01/human...
If you look at glass in medieval glass windows it's heavily distorted by gravity (fatter at the bottom than the top) and that's after ~900 years, so presumably they're actually meaning something more robust than that!
20:20 optical replication ;)
Looks like we need a bit more clarity on what they mean by "glass". If you look at glass in medieval glass windows it's heavily distorted by gravity (fatter at the bottom than the top) and that's after ~900 years, so presumably they're actually meaning something more robust than that!
https://ceramics.org/ceramic-tech-today/glass-viscosity-calc...
I dunno, but it seems to me universities increasingly focus on press releases and marketing departments... 5D and 13.8 billion years? Phony. I know no sane scientist or enigneer that would say they use more than 3D physics. Sounds like catch phrases to sell. With such logic plain old HDD is at least 4D, because it uses CHS coordinates and magnetic orientation, to store data. To me such communication style undermines…
Turns out the biggest decay factor is nanograting and the biggest contributing physical quantity is temperature. They plotted what decay would look like on an Arrhenius plot. They both computed estimates and measured to confirm: the measurements are quite accurate. The specific claim is that they computed that it would last 13.8Gy at a some reasonably high temperature (462K). They could've picked any other point on the time/temp scale, like "here's how long it would last at room temperature" or "here's how hot you could store it if you only cared about it for a billion years".
They did not, however, simply make up a number with no justification, let alone commit straight-up academic fraud, as you're implying.
The paper is here: https://www.researchgate.net/publication/297892219_Eternal_5....
Seems a bit of a waste to dedicate an entire 360TB disc to a single text document like a bible, which is probably just a few KBs... /s More seriously, they don't talk about reading capabilities (retrieval speed etc). And what if it gets scratched? What is the error tolerance? At that density, a single speck of dust could have dramatic implications... I hope this reaches industrial viability, because we desperately ne…
If you really need the lifespan of paper... http://ollydbg.de/Paperbak/