Re: From SSD to NVME
Dan Ritter <dsr@randomstring.org> wrote:
> Stefan Monnier wrote:
> > >> That is a SATA SSD, not an NVMe.
> > > Interesting, thanks. Apparently either it was misrepresented to me, or I
> > > misremembered. That explains some stuff.
> >
> > The switch from SATA to the NVMe interface/protocol happened basically
> > at the same time as the switch from the 2.5" (and mini-pcie) to the M.2
> > format, so it's a common mistake to consider that for an SSD, "M.2 =>
> > NVMe" (the implication is currently true in the other direction, tho,
> > AFAIK).
>
> Not at all. We have many servers with U.2 and U.3 format disks,
> which look like classic 2.5" SSDs but use NVMe PCIe connections.
>
> I suspect there are few desktops (mostly 'workstation' class
> machines) and no laptops using U.2.
>
As I understand it the slots in the M2 SSD connector can tell whether
it's SATA or NVMe or both. I have an M2 SSD which I believe will work
either with a SATA connection or with NVMe, and it has two slots in
its connector.
--
Chris Green
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