Date: Fri, 2 Jul 2004 17:46:34 +0100 From: Bruce Cran <bruce@cran.org.uk> To: Arne Schwabe <arne@rfc2549.org> Cc: hackers@freebsd.org Subject: Re: Setting Standby Mode for ATA Disks Message-ID: <60B91C04-CC47-11D8-B2DB-000D93ACEE20@cran.org.uk> In-Reply-To: <86d63n8ttx.fsf@kamino.rfc1149.org> References: <86d63n8ttx.fsf@kamino.rfc1149.org>
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On 25 Jun 2004, at 17:51, Arne Schwabe wrote: > Hi, > > is there a way to set the standby mode for ATA Disks > > Under linux hdparm -S seems to work: > > -S Set the standby (spindown) timeout for the drive. This > value is > used by the drive to determine how long to wait (with > no disk > activity) before turning off the spindle motor to > save power. > Under such circumstances, the drive may take as long as > 30 sec- > onds to respond to a subsequent disk access, though > most drives > are much quicker. The encoding of the timeout value is > somewhat > peculiar. A value of zero means "off". Values from > 1 to 240 > specify multiples of 5 seconds, for timeouts from 5 > seconds to > 20 minutes. Values from 241 to 251 specify from 1 to > 11 units > of 30 minutes, for timeouts from 30 minutes to 5.5 > hours. A > value of 252 signifies a timeout of 21 minutes, 253 > sets a ven- > dor-defined timeout, and 255 is interpreted as 21 > minutes plus > 15 seconds. > > I googled but I did not found anything like this for FreeBSD :/ ATAidle (http://www.cran.org.uk/bruce/software/ataidle.php and sysutils/ataidle in ports) does this. Unfortunately due to a site redesign, the page seems to have been dropped from the google results; I'll have to add the keywords back in so it gets listed again! -- Bruce Cran
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