6 ms·
sounds like people simply weren't taking any care of them, that's why they broke. If they had cases and decent sd cards that probably wouldn't have happened.
by chaos_a 6y ago
sounds like people simply weren't taking any care of them, that's why they broke. If they had cases and decent sd cards that probably wouldn't have happened.
- qz2 6y agoSchool computers take a beating. That's why the two are incompatible.
- rbanffy 6y agoThat's one of the reasons the Apple II was so popular with schools. It was built like a tank.
- conjectures 6y agoToo many kids, that's the problem with schools these days.
- jon-wood 6y agoI’m responsible for a fleet of a few hundred Raspberry Pis being used as home monitoring hubs - they use high grade SD cards, and are configured to write as little as possible while still fulfilling their function, yet we still see one or two a month fall of the internet because of SD card corruption. This is absolutely a problem. I believe the compute module is somewhat better in that it uses eMMC rather than SD cards.
- read_if_gay_ 6y agoCorrect me if I’m mistaken, but isn’t eMMC literally just an embedded SD card?
- cvakiitho 6y agoIt is, and it is better because it probably has better chips, but it will die, and brick RPi in the future.
- avian 6y agoAs someone who has also worked with fleets of devices (R.Pi-based and others) working off SD-cards, I can confirm what jon-wood is saying. For some reason SD cards fail at a much higher rate than eMMC flash chips in traditional SMT packages.
- makomk 6y agoSame interface as an SD card, but better firmware and probably higher quality flash. SD cards are really aggressively cost-cut, often coming in than less than the price of raw flash of the same capacity.
- lmns 6y agoSD cards with wear leveling and error correction are hard to find and can easily be more expensive than similar SSDs.
- kingosticks 6y agoI was under the impression most non-awful SD cards had some sort of wear-leveling these days but there's no standard for it so they don't advertise it on the front like SSDs. I couldn't really find any proof either-way about this, just a few instances of people looking into it: - https://electronics.stackexchange.com/questions/27619/is-it-true-that-a-sd-mmc-card-does-wear-levelling-with-its-own-controller https://electronics.stackexchange.com/questions/27619/is-it-... - https://www.reddit.com/r/raspberry_pi/comments/ex7dvo/quick_reminder_that_sd_cards_with_wearleveling/ https://www.reddit.com/r/raspberry_pi/comments/ex7dvo/quick_...
- numpad0 6y agoI think every microSD and USB sticks by now has WL across the board, especially at awful grade. WL and ECC are must at current [price, BER, capacity, bit-per-cell] or something.
- lmns 6y agoWith USB sticks it's a different story. There are some manufacturers like Sandisk who claim they use wear leveling in all of their current USB sticks. microSD is a mess in this regard. Wear leveling is less common there and only present in very specific and expensive niche models.