Automatic means for spinning down disks available?

Jules Gilbert jules.stocks at
Wed Apr 11 01:06:27 UTC 2007

Boy, do I want answers too!

We have HD's that run 24X7.  And I don't want to turn them off, I  
just want them to sleep quietly until needed.  We have lot's of RAM,  
thus plenty of cache space.

Our machines are all blades.  (Does this matter?  I don't know.)   
IBMs and Super-Micros.

We spend zillions of bucks on electricity;  We use these machines  
24X7 now, but soon will only need them about 12 hours a day.  Is 24X7  
operation the optimal strategy?

What's the best course here, wrt electric costs, and wrt disk failures?


On Apr 8, 2007, at 2:10 PM, Yuri Grebenkin wrote:

> Just wonder if it's better for an HDD not to spindown at all.
> Maybe it's safer to spin in peace than to park/launch?
> What do you think?
>> Hello again all,
>> 	I was wondering if there was an automatic, and possibly timed  
>> means to
>> spin down disks available in either ports or the base system, by  
>> chance.
>> 	Just trying to cut down on energy use, and increase my disks'  
>> lives :).
>> TIA,
>> -Garrett
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