Re: NVMe (U.2) hot-swap support status?

> On May 20, 2025, at 7:30 AM, Gerrit Kühn <gerrit.kuehn@aei.mpg.de> wrote:
> 
> Am Fri, 16 May 2025 09:43:41 +0200
> schrieb Kurt Jaeger <pi@freebsd.org>:
> 
>> Have you asked Support_Europe@supermicro.com ?
> 
> I did ask both Supermicro and the system vendor meanwhile.
> SM says that they will not support any configuration that has not been
> assembled in-house with them because of nvme hotplug being plagued with
> many issues so only specific configurations could work.
> The vendor blamed this on the AOC retimer cards have. Swapping disks would
> require re-issuing a new pcie device id, which is not possible with the
> retimer card until being rebooted.

What is a "retimer card"?

Thanks,

Charles

> 
> cu
>  Gerrit