Frank Steinmetzger wrote: > Am Sun, Mar 02, 2025 at 10:01:41AM -0600 schrieb Dale: >> >> This is the last bit of SMART for the m.2 stick on my new rig with the >> OS on it, and my chroot where I do my updates. >> >> I been running this rig for a while. > On first read I thought that was a new stick. Because then it would have > been curious why there were 700 hours of runtime on it. Good thing I read it > again, so all looks OK. :) >
That sounds good. >> It looks good to me but I don't see many of these. Really, that is the >> first SSD type thing I ever used. I'm not sure what it looks like when >> one is having problems or went bad either. What do they show when they >> are having problems? If you know. > It may run slow when flash cells degrade, or maybe even show some indicative > SMART errors. But typically, they just fail the next time you switch on the > computer. That means your data is gone, you can’t scrape it out like from an > HDD. If the controller fails, there is no (easy) way to access the data. > > I’ve been using SSDs since 2014, my collection contains 7 so far and an > eight which was broken; it worked at first when writing data, but reading > the files back produced I/O errors from day one, so basically DOA. That was > my smallest yet, being a 2240 format (40 mm long). > Given my rig runs basically 24/7, would I get some sort of errors while it was running? I quite often have uptimes of several months. My biggest reason for shutdowns, power failure. I'm also curious, would SMART show anything? I know even a spinning rust drive can go bad with no SMART warning at all. It can detect some failures but not all. For example, spindle motor failure. It may spin until powered off and then never spin up again. SMART is fairly decent at what it is good at but there is some things it just can't predict. Is SMART even capable of detecting that a SSD drive is about to fail? Or is SMART in the dark still? >> Oh, I was looking at a 2.5" SSD and enclosure. I don't think I'll build >> one anytime soon but I may build one just to play with one day. For the >> data size tho, there isn't much difference price wise. The 2.5" might >> be a little cheaper. I suspect inside the 2.5" is the same as a m.2 >> stick. > Not quite, the PCBs have a 2.5″ heritage. Back when flash was bulky, it > filled the entire case. Especially for the bigger capacities. But with flash > density and bit levels increasing, the PCBs shrunk down to a bare minimum. > Here is a review of the recently discontinued (to many people’s dismay, > because it was a very good series) Crucial MX500 with photos of the PCB: > https://www.computerbase.de/artikel/storage/crucial-mx500-4tb-test.78072/ > And I think there was a website that collects photos of SSD PCBs, or maybe > it was a thread in the computerbase hardware forum – can’t remember. > > PS.: maybe instead of an enclosure, a desktop SATA dock might be better > suited to your needs – Maybe even a 2-bay model –, since you shuffle HDDs > around so much. > >> May even be a m.2 stick in that thing. > Unlikely for a retail SSD. But you can get enclosures, which will simply > pass the SATA connector through to a SATA-only M.2 slot. > To me, it looks like a m.2 turned sideways. Sort of. It looks like they needed the room for the connectors so just turned it sideways. Given I think the 2.5" SSD came first, they actually turned the m.2 long ways and fit it all on that. You get the idea tho. Either way, they are tiny little things. Someone mentioned long term storage and data going bad. Let's say I put either the Samsung or Crucial m.2 stick in my safe and left it there. How often should I plug it in? How long should I leave it plugged in even if I'm not updating data or anything? From my understanding, it stores a small charge, or doesn't, for the 1's and 0's. I'd expect the charge would go away at some point. I've read some claim a spinning rust drive can lose the magnetic field if left alone long enough. I'm not sure if it is true and if it is how long that would take. Figure it would take a while tho. While I tend to update backups once a week, a month being the longest I've ever went, I'd think that would work. Just curious tho, how long they can store data with no power being applied since it stores the data as a charge instead of a magnetic field like spinning rust. Just want to be sure I don't do something it can't handle. These chips still amaze me. Dale :-) :-)
