Date: Tue, 29 Jun 2004 13:04:30 +0400 From: Igor Pokrovsky <ip@doom.homeunix.org> To: Markie <mark.cullen@dsl.pipex.com> Cc: Arne Schwabe <arne@rfc2549.org> Subject: Re: Setting Standby Mode for ATA Disks Message-ID: <20040629090430.GA44729@doom.homeunix.org> In-Reply-To: <002c01c45adb$53ce6770$f700000a@ape> References: <86d63n8ttx.fsf@kamino.rfc1149.org> <002c01c45adb$53ce6770$f700000a@ape>
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On Fri, Jun 25, 2004 at 06:38:51PM +0100, Markie wrote: > ----- Original Message ----- > From: "Arne Schwabe" <arne@rfc2549.org> > To: <hackers@FreeBSD.org> > Sent: Friday, June 25, 2004 5:51 PM > Subject: Setting Standby Mode for ATA Disks > > > | 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 :/ > > Well this almost certainly doesn't help your question at all, but when I > upgraded a box from 4.x to 5.2.1 recently I found it was spinning down one > of the disks without twiddling with any settings at all. This, in turn, > appears to have caused the box to lockup/panic (can't remember now) so I > had to make a cron job that wrote to the disk every minute to stop it from > spinning down! > > I would love to know if there's some tool which can be used to just turn > this behaviour off completely! Did you try to turn it off in BIOS? -ip -- In a family recipe you just discovered in an old book, the most vital measurement will be illegible.
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