Date: Thu, 4 Feb 2010 10:09:03 +0800 From: Erich Dollansky <erich@alogreentechnologies.com> To: freebsd-hackers@freebsd.org Cc: alexbestms@wwu.de, Oliver Fromme <olli@lurza.secnetix.de>, jkim@freebsd.org Subject: Re: Spin down HDD after disk sync or before power off Message-ID: <201002041009.05222.erich@alogreentechnologies.com> In-Reply-To: <alpine.BSF.2.00.1002031328060.9787@wonkity.com> References: <201002031343.o13Dhj7i052507@lurza.secnetix.de> <alpine.BSF.2.00.1002031328060.9787@wonkity.com>
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Hi, let me do. On 04 February 2010 am 04:44:04 Warren Block wrote: > On Wed, 3 Feb 2010, Oliver Fromme wrote: > > > Alexander Best wrote: > > No -- *Please* make sure that the disks are only spun down > > upon an actual power-off command (i.e. when reboot() is > > Could you elaborate a little on why that's bad? It seems like it would > be similar to a standby/resume action. > every disk has a limited number of restarts before it dies. In case of a reboot, it is already known when the command is given that the machine will restart without being powered of. If you spin-down the disk, you lose one start cycle. It is not that important but if it can be done with just one if, please, just do it. Erich
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