cats squirrel
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M.2 SSD RPi4?

Thu Jun 27, 2019 1:05 pm

can I use a 1TB Samsung 970PRO (M.2) with the RPi4 ? What interface/s do I need?

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rpdom
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Re: M.2 SSD RPi4?

Thu Jun 27, 2019 1:16 pm

USB 3.0 to M.2 adaptor should do it. The Pi does not have native M.2 interface.

echmain
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Re: M.2 SSD RPi4?

Thu Jun 27, 2019 2:01 pm

Keep in mind the Pi 4 can't boot from USB *yet*.

Kali-By-Bali
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Re: M.2 SSD RPi4?

Thu Jun 27, 2019 2:05 pm

echmain wrote:
Thu Jun 27, 2019 2:01 pm
Keep in mind the Pi 4 can't boot from USB *yet*.
really... well I'll be getting mine next week, I'm not having any luck with sd-cards

cats squirrel
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Re: M.2 SSD RPi4?

Thu Jun 27, 2019 2:24 pm

thanks for replies. I have seen M.2 to USB3.1, I suppose that will be OK. I don't need to boot from SSD.

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RaTTuS
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Re: M.2 SSD RPi4?

Thu Jun 27, 2019 2:39 pm

I've used a m.2 usb 3 adaptor on the RPi - it works at usb3 speeds
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cats squirrel
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 10:23 am

thanks for confirmation, Rattus

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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 10:36 am

Kali-By-Bali wrote:
Thu Jun 27, 2019 2:05 pm
echmain wrote:
Thu Jun 27, 2019 2:01 pm
Keep in mind the Pi 4 can't boot from USB *yet*.
really... well I'll be getting mine next week, I'm not having any luck with sd-cards
What do you mean? I only use SD cards and they have worked fine for the last 6 years.
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 10:40 am

Kali-By-Bali wrote:
Thu Jun 27, 2019 2:05 pm
echmain wrote:
Thu Jun 27, 2019 2:01 pm
Keep in mind the Pi 4 can't boot from USB *yet*.
really... well I'll be getting mine next week, I'm not having any luck with sd-cards
How do you know if your Pi4 doesn't arrive till next week?

As long as your SD card is not a fake, they are simple and reliable to use.

These are good, and £11 for 64GB is a good price:-
https://www.amazon.co.uk/SanDisk-microS ... way&sr=8-4

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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 10:56 am

There are three types of M.2 drives, and cases are not interchangeable between them.

The Samsung 970 Pro is an NVMe SSD (PCIe X4). Cases for those cost more than the Pi4 itself. Cheap cases are for SATA M.2 drives, and SATA cases will not work with the 970 Pro.

An NVMe SSD and enclosure on a Pi is a waste. It won't be any faster than a much cheaper SATA SSD and enclosure.
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 11:18 am

How To ask Questions :- http://www.catb.org/esr/faqs/smart-questions.html
WARNING - some parts of this post may be erroneous YMMV

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cats squirrel
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 11:38 am

the SSD I have is the Samsung 970PRO NVMe M.2 1TB. From the pic on the box it has an M key connector. That is, one slot with five pins to the right of the slot. Having great difficulty finding a M.2 M-key adapter.

Don't want anything more to do with bloody Amazon, they got me into this mess in the first place. (recommendation... stay well clear of Amazon, I'm £300 down!)

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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 12:01 pm

cats squirrel wrote:
Fri Jun 28, 2019 11:38 am
the SSD I have is the Samsung 970PRO NVMe M.2 1TB. From the pic on the box it has an M key connector. That is, one slot with five pins to the right of the slot. Having great difficulty finding a M.2 M-key adapter.

Don't want anything more to do with bloody Amazon, they got me into this mess in the first place. (recommendation... stay well clear of Amazon, I'm £300 down!)
So return the device? Amazon returns work really well for me. Might be different in places outside the EU.
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 12:14 pm


cats squirrel
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 4:10 pm

jamesh wrote:
Fri Jun 28, 2019 12:01 pm
cats squirrel wrote:
Fri Jun 28, 2019 11:38 am
the SSD I have is the Samsung 970PRO NVMe M.2 1TB. From the pic on the box it has an M key connector. That is, one slot with five pins to the right of the slot. Having great difficulty finding a M.2 M-key adapter.

Don't want anything more to do with bloody Amazon, they got me into this mess in the first place. (recommendation... stay well clear of Amazon, I'm £300 down!)
So return the device? Amazon returns work really well for me. Might be different in places outside the EU.
it was sent from the US (to the UK), and the chances of it getting back to them without problems is small. Then they have to sort out who paid for it, as it doesn't appear on their records! Still took over £300 from my account without a problem, though. Bloody Amazon.
Last edited by cats squirrel on Fri Jun 28, 2019 4:14 pm, edited 1 time in total.

cats squirrel
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 4:12 pm

thanks for looking, but

in order:

B key
not stated
B key.

Mine is an M key! See my problem?

k-pi
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 6:15 pm

No problem. 8-)

One here says it is has a B & an M connector.

https://www.scan.co.uk/shop/computer-ha ... a-adapters

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HawaiianPi
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 6:38 pm

None of the enclosures suggested so far are the correct type. M-key NVMe enclosures are expensive. B or B+M key enclosures won't work.

cats squirrel wrote:
Fri Jun 28, 2019 11:38 am
Don't want anything more to do with bloody Amazon, they got me into this mess in the first place. (recommendation... stay well clear of Amazon, I'm £300 down!)
I've been ordering from Amazon for many years and they're awesome! Problems are rare and they always make it right.
cats squirrel wrote:
Fri Jun 28, 2019 4:10 pm
it was sent from the US (to the UK), and the chances of it getting back to them without problems is small. Then they have to sort out who paid for it, as it doesn't appear on their records! Still took over £300 from my account without a problem, though. Bloody Amazon.
That makes no sense to me. If I go to Amazon UK it tells me they don't ship to the USA, so I imagine the same thing happens the other way around. Amazon purchases should be in your order history, and your credit card company should have the payment (and payee) on record.
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cats squirrel
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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 8:35 pm

yep, B or B+M won't work. It has to be M key.

US posted the item to me, and took money from my debit card account. It is there in green and white! The UK will have nothing to do with my problem, and neither will my bank (so I have opened a new a/c at another bank).

Up until now, I have not had any problems with Amazon (I bought stuff regularly from them for a company I help run, because it was always good, until now).
But have a problem, and it's like pulling teeth. I spent five long days trying to get it sorted, and no joy. So, no problems with Amazon? I hope it stays that way, but have a problem, and you will know what 'problem' really means.

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Re: M.2 SSD RPi4?

Fri Jun 28, 2019 10:46 pm

cats squirrel wrote:
Fri Jun 28, 2019 8:35 pm
So, no problems with Amazon? I hope it stays that way, but have a problem, and you will know what 'problem' really means.
I did not say I've never had a problem. I said problems were few and Amazon always resolved them quickly.

If you are in the UK, then why did you order from Amazon USA? And have you contacted Amazon USA about your issue?

And, what is your issue anyway? You ordered a 970 Pro SSD and received a 970 Pro SSD, so what, exactly, is the problem?

Sorry if I seem blunt (or nosey). Just trying to understand in the hope that I can help you.

There are 3 types of purchases from Amazon.
  1. Sold and shipped by Amazon (you are buying from Amazon directly).
  2. Fulfilled by Amazon (sold by a 3rd party seller who stocks their merchandise in Amazon warehouses).
  3. Sold by a 3rd party who only advertises on Amazon.

Problems with either A or B are usually handled through Amazon customer service. Problems with C are usually handled directly by the seller you purchased from (although you can complain to Amazon if the seller won't help and you believe they have done something wrong, but there is no guarantee the issue will be resolved).

If you don't want to order an NVMe enclosure from Amazon, who would you buy from?
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Re: M.2 SSD RPi4?

Sat Jun 29, 2019 2:57 am

cats squirrel wrote:
Fri Jun 28, 2019 8:35 pm
yep, B or B+M won't work. It has to be M key.
It's more than just fitting into the slot.

The less expensive m.2 adapters are USB to SATA, not USB to NVME. The protocols are not compatible.

Does the 970Pro support a SATA interface? It's a top of the line, performance focused drive, my bet is it doesn't do SATA at all, but I haven't googled the spec.

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Re: M.2 SSD RPi4?

Sat Jun 29, 2019 6:08 am

M.2 SSD is a confusing mess.

There are SATA(AHCI), PCIe x2(AHCI) and NVMe drives, and NVMe can be x2 (two PCIe lanes) or x4 (four PCIe lanes).

Cheaper enclosures typically support SATA or SATA + PCIe x2 AHCI and use the B or B+M keys.

M key NVMe enclosures will cost significantly more, and usually don't support SATA or PCIe x2 AHCI drives.

Non Volatile Memory express is a faster protocol than SATA/AHCI, and the x4 drives are the fastest.

The Samsung 970 Pro is NVMe only (PCIe Gen 3.0 x4, NVMe v1.3) and won't physically fit in a B+M key enclosure.

NVMe x4 drives are ridiculously fast when used on a 4 lane NVMe host. My older Samsung 960 Pro SSD boots Win10 in under 10 seconds. However, when used with a USB interface they only use 2 lanes and top out at around 10Gbps, and that requires a USB 3.1 Gen2 port.
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cats squirrel
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Re: M.2 SSD RPi4?

Sat Jun 29, 2019 2:12 pm

HawaiianPi wrote:
Fri Jun 28, 2019 10:46 pm
cats squirrel wrote:
Fri Jun 28, 2019 8:35 pm
So, no problems with Amazon? I hope it stays that way, but have a problem, and you will know what 'problem' really means.
I did not say I've never had a problem. I said problems were few and Amazon always resolved them quickly.

If you are in the UK, then why did you order from Amazon USA? And have you contacted Amazon USA about your issue?

And, what is your issue anyway? You ordered a 970 Pro SSD and received a 970 Pro SSD, so what, exactly, is the problem?

Sorry if I seem blunt (or nosey). Just trying to understand in the hope that I can help you.

There are 3 types of purchases from Amazon.
  1. Sold and shipped by Amazon (you are buying from Amazon directly).
  2. Fulfilled by Amazon (sold by a 3rd party seller who stocks their merchandise in Amazon warehouses).
  3. Sold by a 3rd party who only advertises on Amazon.

Problems with either A or B are usually handled through Amazon customer service. Problems with C are usually handled directly by the seller you purchased from (although you can complain to Amazon if the seller won't help and you believe they have done something wrong, but there is no guarantee the issue will be resolved).

If you don't want to order an NVMe enclosure from Amazon, who would you buy from?
I didn't buy the SSD from the States, it just turned up, and £300 was missing from my account. I tried to talk to Amazon UK (with whom I had an account) but they said it wasn't anything to do with them. I contacted the US Amazon people, and that is when 'pulling teeth' came into play. Do they go out of their way to be particularly unhelpful. They failed to recognise the 'elephant in the room', I had £300 taken from my account for something I didn't order. Bummer. :twisted:

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Re: M.2 SSD RPi4?

Sat Jun 29, 2019 6:47 pm

echmain wrote:
Thu Jun 27, 2019 2:01 pm
Keep in mind the Pi 4 can't boot from USB *yet*.
It depends on your definition of "boot". You can have /boot on a MicroSD and handover /root to an external drive, as has always been possible.
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cats squirrel
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Re: M.2 SSD RPi4?

Sun Jun 30, 2019 10:50 am

I have ordered a M.2 to USB interface with an M-key connector, I'll try that on my present system, if it works, then I'll move for a RPi4. I'll report back one way or another.

Please keep on topic, guys and gals.

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