harddisk -> sleep

[Michl Ladislav]

On Tue, 6 Feb 2001, Zbyněk Jun wrote:

> Neexistuje nejaky setric hardisku ? Masina mi nenajede se zapnutym APM v
> BIOSu (asi kombinace mb a hd, proste se zasekne bootovani po rozpoznani
> disku) a docela bych uvital, kdyby se po nejake dobe necinnosti "ztisil".
> Jde nejak osidit ten bios (board s cipsetem UMC 881/886) a obejit to pres OS
> (apm v jadre to neumi) ?

hdparm -S xxx /dev/hdx

z manu:
       -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
              seconds 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  vendor-defined
              timeout,  and 255 is interpreted as 21 minutes plus
              15 seconds.