Dennis Lee Bieber  wrote:
> On Mon, 8 Oct 2018 02:49:19 +0000 (UTC), bob prohaska 
> declaimed the following:
>
>>
>>It's understood that "normal" USB hard drives can't be powered
>>directly from the Pi and require a separate power supply. I just
>>started wondering if anybody is making ultra low power mechanical
>>drives that _could_ be powered directly from the Pi's USB port.
>>
>>A 2.5" drive that drew little enough power to be driven from the
>>Pi might be a viable alternative to flash storage. Is there such
>>a beast? 64G or 128GB would be large enough, 32 GB is  slightly
>>too small.
>>
>
>         I ran a benchmark about two+ years ago which required significant
swap
> space to complete; otherwise the Out-of-Memory monitor would kill it
> (somewhat strange, since the program was designed to take a failure from
> malloc() as signal to shut down and report results -- and that part worked
> on a No-OS embedded system). After killing an SD card, I bought a small 1TB
> drive.
>
>         That drive worked on both the R-Pi3 and a Beaglebone Black.
>
>         It has no provision for separate power. USB only.
>
>                 Seagate Backup Plus Portable (model SRD00F1) 1TB.
>
>         I was powering each processor card with a wall-wart supply, not from
a
> computer connection (Beaglebone Black is designed to use either a separate
> 5V supply, or USB client port -- the USB client port also mounts as a
> network connection but I preferred to use the standalone Ethernet port)
>
>

This sounds like it would do the job. Terabyte capacity is far greater
than needed but seems the smallest available. How warm does it run?
How long did it stay in service, and what event ended service?

Thanks for posting!

bob prohaska

--- SoupGate-Win32 v1.05