On a sunny day (Fri, 5 Oct 2018 05:23:13 +0000 (UTC)) it happened bob prohaska
 wrote in :

>A. Dumas  wrote:
>> A. Dumas  wrote:
>>> Haven't seen sdcard-sized ssd's, yet, but haven't looked either. I do know
>>> there's this, supposedly it's ssd-technique in a usb stick, 128 GB version
>>> of which can be had here for ?60 inc. tax:
>>> https://www.sandisk.com/home/usb-flash/extremepro-usb
>>
>>
>> But yeah, at ?90 it does get a bit mad for a $35 computer. What I did for
>> my home server which has to be more reliable than an sd card, is buy a 2.5"
>> portable spinning disk of 1 TB for, idk, ?45? Speeds are fine over usb 2.0
>> and as a server on wifi. Haven't used it on the desktop, though; maybe it
>> would need more snap there.
>
>Any idea what sort of power consumption can be expected for a
>modern small mechanical hard drive? The only one I have is old
>and probably uses twice the power of the Pi when idling. For 24/7
>operation that does add up. The extra wallwart and wires don't help.
>
>Thanks for writing!
>
>bob prohaska

My old 1TB Seagate USB has its own wall-wart marked as 12V 2A,
makes 24 W.
My new small 'Platinum' 1TB USB disk needs 2 USB ports for power,
USB is rated at < 600 mA, so estimate 1A at 5 V is 5 W.
The Seagate spins down after a while not use.
Not sure about the other one,
use it on the TV for movies mainly.
The Seagate has all the raspi backups,
maybe using USB drives with external supply is safer with raspi.

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