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I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

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Re: I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

#51

Post by lights0123 »

dboreham wrote: post #36
alright2565 wrote: post #24

Earlier quoted context omitted.

There were a few more listed deeper in the thread. Fyi, the nitter version is actually readable: https://nitter.net/xenadu02/status/1495693475584557056#m Samsung 970 Evo Plus: MZ-V7S2T0, 2021.10: Pass WD Red: WDS100T1R0C-68BDK0, 04Sept2021: Pass Crucial P2 250GB CT250P2SSD8, FW P2CR046: Pass Samsung 980 250GB MZ-V8V250, 2021/11/07: Pass WD Black SN750 1TB WDS100T1B0E, 09Jan2022: Pass WD Green SN350 240GB WDS240G20C,…

So...vendors no sane person would store valuable data on their drives were the only ones that failed. The sound of a dog biting a man...

I would expect the world's second largest DRAM manufacturer to have trustworthy memory products.

Re: I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

#52

Post by yjftsjthsd-h »

CoastalCoder wrote: post #32

Does advertising a product as adhering to some standard, but secretly knowing that it doesn't 100%, count as e.g. fraud? I.e., is there any established case law on the matter? I'm thinking of this example, but also more generally USB devices, Bluetooth devices, etc.

I was under the impression that a lot of off-brand USB devices didn't use the USB logo specifically to get around certification requirements. Basically, they just aren't advertising adherence to a standard. No idea about NVMe or BT.

Re: I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

#53

Post by jwells89 »

IngvarLynn wrote: post #40

There is a flood of fake SSDs currently, mostly big brands. I've recently purchased counterfeit 1TB. It passes all the tests, performance is ok, it works... except it gets episodes where ioping would be anything between 0.7 ms and 15 seconds, that is under zero load. And these are quality fakes from a physical appearance perspective. The only way I could tell mine was fake is that the official Kingston firmware updat…

That’s wild. Is this limited to specific distribution channels or can you get them from anywhere?

Re: I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

#54

Post by r1ch »

We shipped a shader cache in the latest release of OBS and quickly had reports come in that the cached data was invalid. After investigating, the cache files were the correct size on disk but the contents were all zero. On a journaled file system this seems like it should be impossible, so the current guess is that some users have SSDs that are ignoring flushes and experience data corruption on crash / power loss.

Re: I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

#55

Post by loeg »

IngvarLynn wrote: post #40

There is a flood of fake SSDs currently, mostly big brands. I've recently purchased counterfeit 1TB. It passes all the tests, performance is ok, it works... except it gets episodes where ioping would be anything between 0.7 ms and 15 seconds, that is under zero load. And these are quality fakes from a physical appearance perspective. The only way I could tell mine was fake is that the official Kingston firmware updat…

Where are you seeing counterfeits? AliExpress, Ebay, Amazon?

Re: I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

#58

Post by alanfranz »

ricardobeat wrote: post #44

Misleading headline since after testing eight more drives, none more failed. 2/12 is not nearly as dramatic as “half”, and the ones that lost data are the cheap brands as one would expect.

You can either not editorialize the title, and accept that the thread contains updates, or editorialize it and violate HN guidelines.

Either choice will lead somebody to complain

Re: I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss (2022)

#59

Post by alanfranz »

IngvarLynn wrote: post #40

There is a flood of fake SSDs currently, mostly big brands. I've recently purchased counterfeit 1TB. It passes all the tests, performance is ok, it works... except it gets episodes where ioping would be anything between 0.7 ms and 15 seconds, that is under zero load. And these are quality fakes from a physical appearance perspective. The only way I could tell mine was fake is that the official Kingston firmware updat…

Did you get the fake in an official box? Or OEM version? This is quite a big claim.
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