Ugh!
If I can't boot off it, I can't really use it. My use case is one
non-spinning drive to host /, while other, spinning drives hold my huge
partitions like /home, /d, /s, and /scratch. Having all executables
and /etc based config come off a non-spinning drive speeds things up
immensely, but I have to boot off that drive. Unless I did some weird
stuff like putting /boot on a spinning drive and ubertweaking grub or
UEFI.
I assume the new mobos with built in NVIe can easily boot NVIe. Perhaps
I'll wait til the next mobo purchase.
SteveT
On Tue, 22 May 2018 15:29:46 -0700
Brian Cluff <
brian@snaptek.com> wrote:
> On an older system while you can add a PCI card to the system, in a
> lot of cases you won't be able to boot off of it without motherboard
> support. You can get around that by keeping a spinning drive or a
> small ssd or USB crive that actually boots the system and then
> immediately hands over to the root partition on the NVMe letting you
> have your cake and eat it too.
>
> While a pure PCIe based card is quite expensive, you can get a PCI
> card that will give you an M.2 slot for around $13 and up. The nice
> thing about getting the adapter, other than saving some money, is
> that most new motherboards are shipping with one or more NVMe m.2
> slots, so you will be able to carry your drive over to a new computer
> when you decide to upgrade.
>
> Brian Cluff
>
> On 05/22/2018 02:50 PM, Stephen Partington wrote:
> > there are a few ways to get an NVMe drive in your system. M.2 PCIe
> > based drive. you can also buy a PCIe card to mount one as well as a
> > PCIe card that is integrated. There is also a U.2 which was aimed
> > more towards Server architecture.
> >
> > a x1 slot has a single direction BW of 2.5 Gbps/200MBps and x4 slot
> > can move 1 Gbps/800MBps
> >
> > so most NVMe based m.2 drives are wired to 2 or 4 lanes. In your
> > case a 4x PCIe slot would be a great deal of performance even over
> > the normal SATA bandwidth.
> >
> > the PCIe cards do have a fair amount of cost added to them.
> >
> > On Tue, May 22, 2018 at 2:30 PM, Steve Litt
> > <slitt@troubleshooters.com <mailto:slitt@troubleshooters.com>>
> > wrote:
> >
> > On Tue, 22 May 2018 13:57:29 -0700
> > Brian Cluff <brian@snaptek.com <mailto:brian@snaptek.com>>
> > wrote:
> > > For me, I would get a system that can use a NVMe. They are
> > about the
> > > same price as an SSD, but make and SSD look extremely slow.
> >
> > This is the first I've heard of NVMe. I just read
> > https://en.wikipedia.org/wiki/NVM_Express
> > <https://en.wikipedia.org/wiki/NVM_Express> , and now have some
> > questions:
> >
> > 1) Can I replace the spinning platter 2.5" hard disk in my 5
> > year old laptop with an NVMe device? My research tells me an NVMe
> > must plug into a PCIe slot rather than a SATA slot.
> >
> > 2) Do you fstrim NVMe-hosted partitions the same way you do for
> > SSD?
> >
> > 3) When you install an NVMe card in a PCIe slot, what device
> > name shows
> > up? Is it sd-whatever, or something else?
> >
> > 4) If my desktop has a free PCIe slot, does that mean I can
> > plug in an NVIe drive and use it?
> >
> > Thanks,
> >
> > SteveT
> >
> > Steve Litt
> > June 2018 featured book: Twenty Eight Tales of Troubleshooting
SteveT
Steve Litt
June 2018 featured book: Twenty Eight Tales of Troubleshooting
http://www.troubleshooters.com/28
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