http://www.linux.org.ru/forum/talks/2241232#comment-2241589 > LCC - это атрибут класса Old_age, который растет с возрастом винта и сам по себе ничего не значит, и совершенно не Pre_fail. Просто это винт убирает головку из рабочей области на случай внезапного удара или встряски, и подсчитывает это событие.
>Перевод этот происходит обычно когда винт неактивен, и фактически это просто "еще один seek". Не трахай мозги себе и людям...
и вот еще (http://lists.debian.org/debian-laptop/2009/01/msg00073.html): Some of that report is the result of a misunderstanding:
my Load_Cycle_Count is now at 718,694. this is very bad because the average Load_Cycle_count before failure for most hard disks is 600,000.
This is simply not true. Most laptop drives have a specification that says that it should survive approximately half a million spin-up/spin-down. But Load_Cycle_Count is not spin-up/spin-down (which is tracked by Start_Stop_Count instead). Most drives specs don't say anything about the expected number of "load_cycle" that the drive is expected to survive. This high number of load_cycle is because the drive aggressively moves (unloads) the head away from the disk after a very short time of idleness. It does this not so much to save power as to avoid crashing the head against the disk in case of a shock. I.e. this number is high so as to avoid data loss.
Other drives only unload the heads when the disk spins up/down, so on some drives Start_Stop_Count=Load_Cycle_Count. Yet others don't even bother to report Load_Cycle_Count.
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timeasmymeasure
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Date: 2010-06-02 08:53 am (UTC)> LCC - это атрибут класса Old_age, который растет с возрастом винта и сам по себе ничего не значит, и совершенно не Pre_fail. Просто это винт убирает головку из рабочей области на случай внезапного удара или встряски, и подсчитывает это событие.
>Перевод этот происходит обычно когда винт неактивен, и фактически это просто "еще один seek". Не трахай мозги себе и людям...
и вот еще (http://lists.debian.org/debian-laptop/2009/01/msg00073.html):
Some of that report is the result of a misunderstanding:
my Load_Cycle_Count is now at 718,694. this is very bad because the
average Load_Cycle_count before failure for most hard disks is 600,000.
This is simply not true. Most laptop drives have a specification that
says that it should survive approximately half a million
spin-up/spin-down. But Load_Cycle_Count is not spin-up/spin-down (which
is tracked by Start_Stop_Count instead). Most drives specs don't say
anything about the expected number of "load_cycle" that the drive is
expected to survive. This high number of load_cycle is because the
drive aggressively moves (unloads) the head away from the disk after
a very short time of idleness. It does this not so much to save power
as to avoid crashing the head against the disk in case of a shock.
I.e. this number is high so as to avoid data loss.
Other drives only unload the heads when the disk spins up/down, so on
some drives Start_Stop_Count=Load_Cycle_Count. Yet others don't even
bother to report Load_Cycle_Count.