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From: Arnd Hannemann <arnd@arndnet.de>
To: Roland <devzero@web.de>
Cc: tvrtko@ursulin.net, pernegger@gmail.com, snitzer@gmail.com,
	jengelh@computergmbh.de, zorglub_olsen@hotmail.com,
	renatoyamane@mandic.com.br, linux-kernel@vger.kernel.org
Subject: Re: WD doesn`t use disks with Linux - was Re: Re:Western Digital GreenPower drives and Linux
Date: Tue, 13 May 2008 23:20:43 +0200	[thread overview]
Message-ID: <482A062B.3010308@arndnet.de> (raw)
In-Reply-To: <003201c8b53c$67ff02d0$6400a8c0@bui.materna.com>

Roland wrote:
>> BTW, WD's tech support has gone silent so chances for an easier
>> solution are not so great.
>>
>> Tvrtko
>
> I`ve got a real funky response from WD support  today, i`d like to
> share here.
> This is just too weird....
>
> After asking if they could give a comment if the problem with the high
> Load_Cycle_Count may be an issue of their drives or an issue of Linux
> i got:
>
> ------
> Dear......
> The problem is, that we actually don`t use the disks with Linux. I´m
> sorry that i cannot send further information to you.
>
> Sincery yours
> <insert support employee name here>
> Western Digital Service and Support
> ------
> (translated from german)

Well the answer was probably just from a first level support person so
nothing one should get excited about.
Anyway to the high Load_Cycle_Count; if I understood the technology
correctly the WD GreenPower drives are exactly "Green" because they
unload the heads on a plastic ramp (no landing zone!) quite often during
longer idle periods. Thus they can power off the positioning logic and
actuator of the heads. -> safe Power
This also explains why the power usage under seek is comparable with
other "non-green" drives...

<snipped a lot of stuff>
> 193 Load_Cycle_Count 0x0032 197 197 000 Old_age  Always  - 10233
my 1 TB drive has also a relative high value:

193 Load_Cycle_Count        0x0032   200   200   000    Old_age  
Always       -       2786


Just my 2 cents,
Arnd
||

  reply	other threads:[~2008-05-13 21:20 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-13 21:00 WD doesn`t use disks with Linux - was Re: Re:Western Digital GreenPower drives and Linux Roland
2008-05-13 21:20 ` Arnd Hannemann [this message]
2008-05-13 22:29   ` Jan Engelhardt
2008-05-14  7:48     ` Arnd Hannemann
2008-05-14 13:20   ` linux-os (Dick Johnson)
2008-05-14 13:39     ` Jan Engelhardt
2008-05-14 16:09       ` linux-os (Dick Johnson)
2008-05-14 17:15         ` linux-os (Dick Johnson)
2008-05-15 20:39           ` linux-os (Dick Johnson)
2008-05-13 21:28 ` Niels
2008-05-16  9:35 ` Pádraig Brady
2008-05-16 10:21   ` Jan Engelhardt

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