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by kccqzy 300 days ago
> there also doesn't currently seem to be any high capacity M.2 SATA SSDs

I have a high capacity M.2 SATA in my computer. It's 4TB which I think qualifies for high. I bought it because I found out about that empty slot in my computer and wanted to fill it, not because of a particular need. Having a rare part in my computer gives me an indescribable sense of joy. And don't worry it's entirely used for extra redundancy so I won't lose data even if it dies.

2 comments

The author uses a number larger than 4TB as "high" (source https://utcc.utoronto.ca/~cks/space/blog/tech/NVMeOvertaking..., where they lament that SATA SSDs stop at 4TB).
They don't stop at 4TB though... consumer SATA drives go up to 16TB. And I've heard there are even larger enterprise drives. https://www.amazon.com/dp/B09FJFMQBB
From the article I linked: "...capacities larger than that only available from a few specialty vendors at eye-watering prices"

From what I can tell, this was true when it was written, but has changed since with the Samsung QVO 8TB SATA only at a roughly 25% markup compared to a 8TB QLC M2 2280 drive. When I searched last winter it was 2-4x expensive as soon as you crossed the 4TB mark, with 4TB and under being similarly priced between SATA and nvme drives.

That's the reality of low-volume products, they're expensive. Most people dropping that much cash on NAND will just drop the cash to plug it into something that can access it quickly. If you want big slow storage for cheap, just get a spinning disk.
Random IOPS through a SATA interface is orders of magnitude faster on NAND vs a spinning disk. A SATA SSD and a spinning disk might as well be two completely different categories of device for any non-sequential workload.
If you need NAND for the performance, why use a SATA controller? NVME is more available, faster, and cheaper.
> And don't worry it's entirely used for extra redundancy so I won't lose data even if it dies.

Just make sure to still back up the data!