Server (Centos) - HDD-Wechsel ?

[colossus]

hdparm -S, nicht hdparm -s. Ich nutze das bei meinen Homeserver, alle Platten legen sich nach 30 Minuten ohne Aktivitaet schlafen. Das Optarg des Schalters ist ein bisschen "besonders", ich zitiere die hdparm-Manpage:

       -S     Put  the  drive  into  idle  (low-power)  mode, and also set the
              standby (spindown) timeout for the drive.  This timeout 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 "timeouts  are  disabled":  the
              device will not automatically enter standby mode.  Values from 1
              to 240 specify multiples of 5 seconds, yielding timeouts from  5
              seconds to 20 minutes.  Values from 241 to 251 specify from 1 to
              11 units of 30 minutes, yielding timeouts from 30 minutes to 5.5
              hours.   A  value  of  252  signifies a timeout of 21 minutes. A
              value of 253 sets a vendor-defined timeout period between 8  and
              12  hours, and the value 254 is reserved.  255 is interpreted as
              21 minutes plus 15 seconds.  Note that  some  older  drives  may
              have very different interpretations of these values.