Date: Tue, 23 Mar 2010 23:05:41 +0100 From: Michiel Boland <michiel@boland.org> To: freebsd-hardware@freebsd.org Subject: intellipark leads to high load cycle count Message-ID: <4BA93B35.9090304@boland.org>
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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.)
# dmesg | grep ad4
ad4: 953869MB <WDC WD10EARS-00Y5B1 80.00A80> at ata2-master UDMA100
GEOM: ad4: partition 1 does not start on a track boundary.
GEOM: ad4: partition 1 does not end on a track boundary.
GEOM: ad4s1: geometry does not match label (32h,32s != 16h,63s).
Trying to mount root from ufs:/dev/ad4s1a
# smartctl -a /dev/ad4 | grep Load
193 Load_Cycle_Count 0x0032 188 188 000 Old_age Always -
38319
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 don't want to boot into DOS, windows or any of that stuff. I also tried
ataidle to no effect.
Cheers
Michiel
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