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From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
To: Tejun Heo <htejun@gmail.com>
Cc: Michael Sedkowski <sedmich@gmail.com>,
	"Rafael J. Wysocki" <rjw@sisk.pl>,
	linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
	linux-acpi@vger.kernel.org
Subject: Re: Disk spin down issue on shut down/suspend to disk
Date: Tue, 7 Aug 2007 09:56:29 -0300	[thread overview]
Message-ID: <20070807125629.GD30661@khazad-dum.debian.net> (raw)
In-Reply-To: <46B83C0B.8050902@gmail.com>

On Tue, 07 Aug 2007, Tejun Heo wrote:
> emergency unload.  Emergency unload does shorten the lifespan of the
> disk but you don't have to worry too much about it.  Disks are designed
> to withstand certain number of emergency unloads.

You *do* have to worry about it in any box you turn off daily.  Desktop HDs
will croak fast in that scenario, laptop HDs less so, but still too fast.

A very good laptop HD can last about 20k emergency unloads (this is a unit
that can do about 600k normal unloads in its lifetime).  Desktop and server
HDs don't even come close to those numbers, last time I checked.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

  parent reply	other threads:[~2007-08-07 12:57 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <838f88840708051428p3d65ff42w627af4bc38f57de3@mail.gmail.com>
2007-08-05 21:33 ` Michał sed
     [not found]   ` <6bffcb0e0709080832o30fb21b5vcd09baa8387efcc0@mail.gmail.com>
2007-09-08 21:29     ` Rafael J. Wysocki
2007-09-09  9:20       ` Maciek Rutecki
2007-09-09 11:35         ` Rafael J. Wysocki
2007-08-06  5:22 ` Tejun Heo
2007-08-06 14:23   ` Henrique de Moraes Holschuh
2007-08-06 14:50     ` Michael Sedkowski
2007-08-06 15:01       ` Henrique de Moraes Holschuh
2007-08-06 15:27         ` Michael Sedkowski
2007-08-06 15:32         ` Rafael J. Wysocki
2007-08-06 17:03           ` Tejun Heo
2007-08-06 18:21             ` Michael Sedkowski
2007-08-06 18:43               ` Tejun Heo
2007-08-06 19:40                 ` Rafael J. Wysocki
2007-08-06 19:43                 ` Michael Sedkowski
2007-08-06 22:18                 ` Michael Sedkowski
2007-08-07  6:56                   ` Tejun Heo
2007-08-07  9:18                     ` Michael Sedkowski
2007-08-07  9:31                       ` Tejun Heo
2007-08-07  9:51                         ` 答复: " sam song
2007-08-07 12:56                         ` Henrique de Moraes Holschuh [this message]
2007-08-07  9:30                     ` Michael Sedkowski
2007-08-06 23:45                 ` Henrique de Moraes Holschuh
2007-08-07  6:53                   ` Tejun Heo
2007-08-07 12:51                     ` Henrique de Moraes Holschuh
2007-08-07 13:04                       ` Thomas Renninger
2007-08-07 13:35                         ` Tejun Heo
2007-08-07 13:09                       ` Tejun Heo
2007-08-07 13:16                         ` Henrique de Moraes Holschuh
2007-08-07 13:32                           ` Tejun Heo
2007-08-07 13:45                             ` Thomas Renninger
2007-08-07 14:01                               ` Tejun Heo
2007-08-09 15:16                                 ` Pavel Machek
2007-08-09 15:56                                   ` Thomas Renninger
2007-08-06 19:25               ` Rafael J. Wysocki
2007-08-05 21:37 Michał sed
2007-08-06 12:34 Michael Sedkowski
     [not found] <fa.bsWpbo79BZgHoaIGhEMfTEBxs54@ifi.uio.no>
     [not found] ` <fa.mg6p0itaOQUo/t8deCaYpyqj6Nk@ifi.uio.no>
     [not found]   ` <fa.RxWYL8z8KktgL8LGZ/cTB2nI1Yc@ifi.uio.no>
     [not found]     ` <fa.AyyCtZ2yLjC5noHPHtmzn4ffhhE@ifi.uio.no>
     [not found]       ` <fa.SuAjism+m0z0haqCRVjkc2S978o@ifi.uio.no>
     [not found]         ` <fa.QgWcLG2hfRb92g4blN61qYfRjlQ@ifi.uio.no>
2007-08-06 23:31           ` Robert Hancock
2007-08-07  6:41             ` Tejun Heo
2007-08-07 14:28               ` Robert Hancock
2007-08-07 14:37                 ` Tejun Heo
2007-08-07 14:45               ` Thomas Renninger
2007-08-07 19:23                 ` Michael Sedkowski
2007-08-07 20:09                   ` Maciej Rutecki
2007-08-07 20:33                     ` Rafael J. Wysocki
2007-08-07 20:41                       ` Rafael J. Wysocki
2007-08-07 21:28                         ` Maciej Rutecki
2007-08-07 22:30                           ` Rafael J. Wysocki
2007-08-08  9:29                           ` Michael Sedkowski
2007-08-08  2:56                       ` Tejun Heo
2007-08-08 12:24                         ` Rafael J. Wysocki
2007-08-09 21:46                           ` Rafael J. Wysocki
2007-08-08  2:54                   ` Tejun Heo
2007-08-08 14:08                     ` Mark Lord
2007-08-08 14:14                       ` Tejun Heo
2007-08-08 14:24                         ` Mark Lord
2007-08-08 14:30                           ` Tejun Heo
2007-08-08 15:21                           ` Mark Lord
2007-08-08 15:35                             ` Mark Lord
2007-08-08 16:20                               ` Tejun Heo
2007-08-08 17:04                                 ` Mark Lord
2007-08-09 15:06               ` Pavel Machek
2007-08-09 18:47                 ` Rafael J. Wysocki
     [not found]           ` <fa.Nj/igOoDE6GHsgyWFEo/9WCtE9c@ifi.uio.no>
     [not found]             ` <fa.usmOl3OVQVx3VExwvKiQI5iAX5Q@ifi.uio.no>
     [not found]               ` <fa.A9df+SR4FMdI7qZmsXY0xFyurbU@ifi.uio.no>
2007-08-08  0:23                 ` Robert Hancock
2007-08-08 12:27                   ` Rafael J. Wysocki
     [not found]         ` <fa.3VfWxxgY+5IvJGIam0al/rUn/Q4@ifi.uio.no>
     [not found]           ` <fa.WVQYJNYB2uuhgQFoGpK6eCfWazo@ifi.uio.no>
     [not found]             ` <fa.5IFtia9VWM6ePZjGzb+WVMoHQCY@ifi.uio.no>
     [not found]               ` <fa.M8tTjYMrntIRJ5aXHPFPjCNEk6k@ifi.uio.no>
     [not found]                 ` <fa.IDurvYCLZ5ArGLsuNcLC3l1CSqQ@ifi.uio.no>
2007-08-11  2:21                   ` Robert Hancock
     [not found] <fa.kWUtPRLMmU/fKL6dyOOVKsSM0fg@ifi.uio.no>
     [not found] ` <fa.EbjjD+/NapKvm3jfMLnkxumomC0@ifi.uio.no>
     [not found]   ` <fa.dm4O1sGL4RetYq2szbwwJT3cf2c@ifi.uio.no>
     [not found]     ` <fa.7tYfpSdE8/lmfK5ulSN+/6TRSbw@ifi.uio.no>
     [not found]       ` <fa.R1sVaL6mATofNd18aEZgwlczb8M@ifi.uio.no>
     [not found]         ` <fa.Z030SpvZYAHux0f8UtlnJwatsvY@ifi.uio.no>
2007-08-08  0:14           ` Robert Hancock
2007-08-08  4:06             ` Henrique de Moraes Holschuh
2007-08-08  4:26               ` Robert Hancock
2007-08-08 18:58 Al Boldi

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