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

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