sanfx
Posts: 59
Joined: Thu Sep 08, 2016 5:40 pm

Does Raspberry Pi 3 support USB 3.0 drives ?

Mon Jun 19, 2017 5:53 pm

Hi,

I am thinking to buy USB drive: http://amzn.to/2sKQCXT

to host a cloud storage based web app from this drive , its cost good amount I wanted to be sure if a USB drive that says USB 3.0 will work with Raspberry Pi 3 that doesnt have support for USB 3.0 ?

if it will work how much impact interms of slowness.

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PeterO
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Re: Does Raspberry Pi 3 support USB 3.0 drives ?

Mon Jun 19, 2017 6:01 pm

That web page actually says it is backwards compatible with USB 2.0.

Any change in performance will depend on what is the actual limiting factor. That could be the storage medium, the USB interface, the application , the network ..........

PeterO
Discoverer of the PI2 XENON DEATH FLASH!
Interests: C,Python,PIC,Electronics,Ham Radio (G0DZB),Aeromodelling,1960s British Computers.
"The primary requirement (as we've always seen in your examples) is that the code is readable. " Dougie Lawson

W. H. Heydt
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Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: Does Raspberry Pi 3 support USB 3.0 drives ?

Mon Jun 19, 2017 6:03 pm

Define "support". The USB ports on all existing Pi are USB 2.0. USB is designed to be backwards compatible. You can attach a USB 3 flash drive to a USB 2 port on a Pi and it will work. You can attach a WD PiDrive, which has a native USB 3 interface, to a Pi USB 2 port and it will work. You can even attach a PiDrive with a USB-A to microUSB 3 cable to a Pi USB 2 port and it will work. Does that constitute "support"? Or are you looking to get the full performance you'd expect from a USB 3 device? If you are, you won't get it.

(Some of us really, really hope that some fine day there will be a Pi with USB 3. It *might* happen in a year or two with the Pi4, but there have been no hints, let alone announcements, in that direction.)

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orignal_traveler
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Re: Does Raspberry Pi 3 support USB 3.0 drives ?

Tue Dec 19, 2017 10:18 pm

I have 2 Pi3's that boot off of SATA III hard drives. One is using a WD portable USB 3.0 drive and the other is using an internal SATA III HDD with a USB to SATA conversion cable. Both seem to work just fine. Grant you, the USB 2.0 speed limitation tends to slow down the performance of the SATA III hard drives, but the boot time is still very good. I do notice some delays in starting some of the applications however. I have not tried it, but you should be able to use a powered USB 2.0 hub with multiple USB 3.0/SATA III hard drives (I already have a 4 TB NAS that I mount the share as a native folder on "/") .

I do know from experience that USB 3.0 hubs will not work with the Pi3. I have tried USB 3.0 hubs from several different vendors, and all fail. I understand that this is likely a limitation due to the lack of backward compatibility of the USB 3.0 hubs.

W. H. Heydt
Posts: 7808
Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: Does Raspberry Pi 3 support USB 3.0 drives ?

Wed Dec 20, 2017 12:40 am

I boot a Pi3B directly from a WD PiDrive. The PiDrive has a native USB 3 connection, I have also tested the drive with an SBC that has USB 3 built in. No problems either way.

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Imperf3kt
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Location: Australia

Re: Does Raspberry Pi 3 support USB 3.0 drives ?

Wed Dec 20, 2017 12:54 am

Short version: no. USB 3.0 is not supported on a Pi.

Long version:
All USB devices are backwards and forwards compatible. Supported or not, it will work on your Pi.
Pi3b - 'normal use' temperature (25% CPU load) 76℃, ambient 21℃

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HawaiianPi
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Re: Does Raspberry Pi 3 support USB 3.0 drives ?

Wed Dec 20, 2017 9:02 am

Yes, USB 3.0 flash drives work on USB 2.0, and often perform better than USB 2.0 drives (but still at USB 2.0 speeds).

I'm currently running my Pi3 off an SSD with a USB 3.0 adapter. It works fine.
My password is the last 8 digits of Pi.

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