Re: sata port multiplier
On Sun, 12 Oct 2025, Dan Ritter wrote:
> fxkl47BF@protonmail.com wrote:
>> i want to try a sata port multiplier
>> lspci says i have ASMedia Technology Inc. ASM1061 SATA IDE Controller (rev 02)
>> i've seen some post that suggest there may be compatibility issues
>> so i'm asking if anyone is using one of these things
>> any suggestions
>>
>> i know this is stupid
>> and a bad idea
>> and a waste of time and money
>> but
>> i have lots of time and a burning curiosity
>
> It's not necessarily a bad idea; if you have, for example, a
> large pile of disks where full SATA speed access is overkill, a
> port multiplier can be a reasonable access method.
>
> SATA3 is 600MB/s, and a typical rotating disk maxes out at
> 150MB/s or 250MB/s (on the newest). So 2:1 is reasonable, and
> 4:1 can be reasonable, depending.
>
> The particular problem that you will likely have, though, is
> that the ASM1061 is not very good, and there are lots of reports
> of problems plugging them into port multipliers.
>
> If you can swap it out to another PCIe based disk controller,
> you'll be in luck... but if you can do that, you might want an
> LSI 300X PCIe controller, which can do SAS and SATA and
> frequently comes in 8 and 16 port variants, thus no longer
> requiring a port multiplier in many scenarios.
swapping the controller is out
this is a single board computer with builtin sata
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