Am Sun, Mar 02, 2025 at 10:01:41AM -0600 schrieb Dale:

Grant Edwards wrote:

On 2025-02-28, Dale <rdalek1967@gmail.com> wrote:

We all know the Samsung m.2 sticks are really good. They are well
known for the quality.

I can definitely agree with that. Over the years I've installed
probably close to fifteen Samsung flash drives. Some SATA, some m.2,
a couple USB 3.

While we probably all knew what you meant, let me please pick a nit that you can also have M.2 as SATA. You wanted to compare SATA to NVMe. Because M.2
is a form factor, while SATA is a protocol (which for SSDs usually meant the 2.5″ form factor). M.2 supports several protocols, which is coded by its “key”, i.e. the location of notches on the connector. It can support just SATA, just NVMe (i.e. PCIe) or both.

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. :)

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).

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.

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