I know port multipliers are bad, and all that, but dang these things are getting interesting https://www.amazon.com/Port-Non-RAID-SATA-Adapter-bandwith/dp/B0BGJPDL8N/ [IMG_0970] [IMG_0973]

Allow me to jump in here. We can certainly encourage/discourage certain component choices, but ultimately each user is responsible for their own decisions, their own level of acceptable risk tolerance, and their desired system form factor/budget. It’s important to note that M.2 is only a form fact…

[image] Davvo: Uhm not always! That’s one of the issues in using hwardare raid controllers with cache… if ZFS believes to have written X but the controller writes Y the checksum could not notice. That’s why it’s crucial to use ECC. Yeah. That’s again a different thing. Drives/Controllers mus…

Two things. First, part of the problem with RAM cache on disk controllers is out of order writes by the disk controller, followed by a crash where the complete ZFS transaction is not finished. Yes, rare. But, when it happens, the pool has to be rolled back to a prior transaction. Maybe not complet…

And, to answer the “why do you recommend using motherboard SATA ports but I can’t use this oddball SATA adapter I found?” question: Like the LSI controllers, the Intel or AMD SATA controllers baked into chipsets have also been used for many millions of “storage-years”.

Chipset controllers don’t use port multipliers without telling you in the manual.

[image] ASM1166|ASMedia Technology Inc. ASMedia Technology was founded in 2004 and went public in 2012 (stock code: 5269.TW). Headquarter is located in Taiwan. ASMedia specializes in high-speed interface technologies with strong expertise in high-speed SERDES in house development. Compan…

Another example of things going bad with the ASM1166 chipset. Could be lack of heatsink [image] Getting Bootloop on TrueNAS CORE TrueNAS General Here is the SATA adapter I am using ORICO M.2 PCIe M Key to 6 x SATA (Amazon link) I only have 2 sticks of memory so I tried u…

Reddit discussion on above 6x Asm1166 adapter One major note: this poor little asmedia chip runs HOT, and that’s only 3 drives running at 250 MB/s each. Other comments/reviews also mention the chip gets hot. I’m certain this is the cause of premature deaths, so get a heatsink+airflow for it. The c…

Thanks for documenting that this one is bad even without a downstream port multiplier…

That’s the thing, with SCALE and ZoL, iXsystems is moving from a relatively small world of well “supported” hardware platforms and add-on hardware that FreeBSD has drivers for into the Linux ecosystem, where a much larger scale and scope of allegedly-compatible hardware exists. Hence, I expect more…

It will influence how the appliance is perceived. Casual users want it to run on whatever they want.

5x / 6x / 8x SATA M.2 PCIe Cards

TrueNAS General

Stux April 7, 2024, 2:14am 25

Another example of things going bad with the ASM1166 chipset. Could be lack of heatsink

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5x / 6x / 8x SATA M.2 PCIe Cards

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