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Re: USB hard drives -- recommendations?

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Le 03/02/2019 à 11:22, Alexander V. Makartsev a écrit :
> On 03.02.2019 15:01, Pascal Hambourg wrote:
>> Le 03/02/2019 à 10:10, Curt a écrit :
>>> On 2019-02-03, local10 <local10@tutanota.com> wrote:
>>>>
>>>> You may want to consider buying an USB HDD enclosure/cradle, like this
>>>> one[1] for example, they are cheap and would allow you to use a
>>>> regular internal HDD as a USB drive.
>>
>> Note that this solution may require an external power supply.
>
> It won't be necessary for 2.5" hard drives. Only 3.5" hard drives
> require +12V DC to function, which USB interface can not provide.

Some 2,5" drives require more current than the 500 mA a USB 2.0 host 
port can provide. Looking at my own, I read 800 mA, 1100 mA, 580 mA, 451 
mA. So only one of them is below 500 mA.

>>> What's inside an external drive if not an internal drive?
>>
>> Sometimes, a drive with a native USB interface instead of a SATA
>> interface.
>>
> Are you sure about that?

Yes, from opening a few of them.

> I think it won't be cost-effective to make an
> entirely new custom PCB for a hard drive that will have both SATA and
> USB controllers on-board.

The PCB can be the same, but it can be equipped with only the 
controller, PHY and connector required for the destination.
No need for an adapter PCB, controller and connectors in the enclosure. 
Less parts = less assembly cost.

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Thread

USB hard drives -- recommendations? "James H. H. Lampert" <jamesl@touchtonecorp.com> - 2019-01-25 18:30 +0100
  Re: USB hard drives -- recommendations? deloptes <deloptes@gmail.com> - 2019-01-25 19:10 +0100
  Re: USB hard drives -- recommendations? Celejar <celejar@gmail.com> - 2019-01-25 21:10 +0100
    Re: USB hard drives -- recommendations? David Wright <deblis@lionunicorn.co.uk> - 2019-01-25 22:40 +0100
      Re: USB hard drives -- recommendations? Celejar <celejar@gmail.com> - 2019-01-29 04:10 +0100
    Re: USB hard drives -- recommendations? Ken Heard <ken@heard.name> - 2019-02-06 08:50 +0100
  Re: USB hard drives -- recommendations? "Alexander V. Makartsev" <avbetev@gmail.com> - 2019-01-25 21:20 +0100
    Re: USB hard drives -- recommendations? Celejar <celejar@gmail.com> - 2019-01-25 22:30 +0100
      Re: USB hard drives -- recommendations? "Alexander V. Makartsev" <avbetev@gmail.com> - 2019-01-25 23:20 +0100
        Re: USB hard drives -- recommendations? Celejar <celejar@gmail.com> - 2019-01-27 06:00 +0100
  Re: USB hard drives -- recommendations? Peter Ehlert <peter@sdi-baja.com> - 2019-01-26 03:00 +0100
    Re: USB hard drives -- recommendations? Jens Holzhäuser <Jens.Holzhaeuser@gmx.net> - 2019-01-26 04:30 +0100
    Re: USB hard drives -- recommendations? Cindy-Sue Causey <butterflybytes@gmail.com> - 2019-01-26 19:10 +0100
    Re: USB hard drives -- recommendations? local10 <local10@tutanota.com> - 2019-02-03 01:30 +0100
      Re: USB hard drives -- recommendations? Toni Mas i Soler <antomassol@gmail.com> - 2019-02-03 09:10 +0100
      Re: USB hard drives -- recommendations? Curt <curty@free.fr> - 2019-02-03 10:20 +0100
        Re: USB hard drives -- recommendations? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-02-03 11:10 +0100
          Re: USB hard drives -- recommendations? "Alexander V. Makartsev" <avbetev@gmail.com> - 2019-02-03 11:30 +0100
            Re: USB hard drives -- recommendations? David Wright <deblis@lionunicorn.co.uk> - 2019-02-03 16:10 +0100
              Re: USB hard drives -- recommendations? "Alexander V. Makartsev" <avbetev@gmail.com> - 2019-02-03 18:40 +0100
            Re: USB hard drives -- recommendations? "James H. H. Lampert" <jamesl@touchtonecorp.com> - 2019-02-03 19:00 +0100
            Re: USB hard drives -- recommendations? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-02-03 19:10 +0100
              Re: USB hard drives -- recommendations? "Alexander V. Makartsev" <avbetev@gmail.com> - 2019-02-03 20:10 +0100
                Re: USB hard drives -- recommendations? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-02-03 20:30 +0100
                Re: USB hard drives -- recommendations? Michael Stone <mstone@debian.org> - 2019-02-04 18:20 +0100
          Re: USB hard drives -- recommendations? Curt <curty@free.fr> - 2019-02-03 11:40 +0100
          Re: USB hard drives -- recommendations? Joe <joe@jretrading.com> - 2019-02-03 12:50 +0100
  Re: USB hard drives -- recommendations? Stefan Monnier <monnier@iro.umontreal.ca> - 2019-02-06 16:20 +0100

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