On 08/01/2020 21:13, druck wrote:
> On 07/01/2020 21:34, Jim Jackson wrote:
>>>> It seems to be this thing:
>>>>
https://www.notebookcheck.net/Review-Iomega-eGO-Portable-500GB-USB-3-0.33106.0.
html
>>>>
>>>
>>> It's spinning rust drive, that is going to be slower as main OS disc
>>> than any sort of flash based medium. It would be OK for mass data
>>> storage.
>>
>> Go with the spinning rust - you might be surprised at the performance.
>> Some people seem to think you always need the very fastest. It all
>> depends
>> on what you are planning to do.
>
> Performance for large sequential files is fine, but for use as a system
> disc you need fast small random access performance, and for that
> spinning rust has always been bad. Hence everyone moving to SSDs on
> their PCs.
>
>>>> I tried to plug it in just now, while the Pi 4B was running with power
>>>> from the wall socket, and it crashed the operating system. The X-server
>>>> crashed, it returned to the text console, and then seemed to lock up
>>>> with some kind of file system errors being printed. It accepted no
>>>> input
>>>> from the keyboard anymore.
>>>
>>> It probably requires too much power, and caused a voltage dip. You'll
>>> need to use a USB hub to provide the power most types of spinning rust
>>> hard drive require.
>>
>> Quite a lot of modern spinners work perfectly well powered from Raspberry
>> pi's. You do need an adequate power supply. And for the 4B that means one
>> that supply 3 amps.
>
> But this one crashes the OP's Pi.
>>
>>> Given the two points above, it's the wrong thing for a Raspberry Pi. If
>>> you are happy with the its physical form factor, get a USB attached SSD.
>>
>> "wrong thing" - how prescriptive. In 2 of my Pi cases USB attached
>> spinning rust turned out to be the right point re. price/performance.
>> Let's be a bit more nuanced about this.
>
> It's not being prescriptive to point out that disk is question is not
> the right solution.
>
> ---druck
It not even proscriptive.

Sigh. I wish I had taken my pre printed parking ticket  "for parking in
a *pre*scribed place" to court.


--
There is something fascinating about science. One gets such wholesale
returns of conjecture out of such a trifling investment of fact.

Mark Twain

--- SoupGate-Win32 v1.05