Re: Hard Drive battery consumption

["Nikolay N. Ivanov" <nn@xxxxxxxx>]

Luis,

hdparm's manpage says:

-C Check  the  current  IDE power mode status, which will always be
   one  of  unknown  (drive  does  not   support   this   command),
   active/idle  (normal  operation), standby (low power mode, drive
   has spun down), or sleeping (lowest power mode,  drive  is  com-
   pletely shut down).  The -S, -y, -Y, and -Z flags can be used to
   manipulate the IDE power modes.

This link may help you:
http://www.samwel.tk/laptop_mode/tools/faq.html

And the book "Modeling Hard-Disk Power Consumption":
http://www.johnzed.net/zedlewski03modeling.pdf

> Hi Guys,
> 
> I am currently developing a project which tries to minimize the
> consumption of battery in laptops avoiding as much as possible the use of
> the hard drive. To evaluate if our implementation is doing well, we need
> to know how is the consumption of energy in the laptop or even better how
> much power consumes the hard drive in a period of time.
> 
> Thanks in advance,
> 
> Luis Useche.
> 

-- 
Nikolay N. Ivanov

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