intellipark leads to high load cycle count
Michiel Boland
michiel at boland.org
Fri Mar 26 19:11:53 UTC 2010
Aravind K. Mikkilineni wrote:
> On Tue, 23 Mar 2010 Michiel Boland <michiel at boland.org> wrote
>
>> Hi. I have one of those new green WD HDs with Intellipark, that is, they
>> like to park their heads every 8 seconds. As a result the load cycle count
>> grows at an alarming rate. (If I understand correctly this number should not
>> exceed about 300k or so.)
>>
>> Is there any way to turn off or increase the 8-second timeout? Or do I have
>> to bin the disk and use something better?
>
> I have some older GP drives which do not seem to ever park their heads. The
> newer GP drives I have behave as you described.
>
> I have had success either turning off the head parking or greatly reducing it
> by doing 'hdparm -S 0 -B 254 <device>'. Either '-B 254' or -B 255' depending
> on the drive.
I guess 'hdparm -B' is equivalent to 'ataidle -P'? In this case I'm out of luck:
# ataidle -P 254 /dev/ad4
ataidle: the device does not support advanced power management
Cheers
Michiel
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