In article ,
bob prohaska   wrote:
>Jan Panteltje  wrote:
>>
>> 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.
>
>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.

Western digital made a drive a while back that was exlpicitly designed
to work with the Pi. 314GB in capacity of something.

Gordon

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