On Tue, Oct 09, 2018 at 12:16:27PM +1030, Tim via users wrote:
Allegedly, on or about 8 October 2018, Wolfgang Pfeiffer sent:
Except "-y" will not mean "sleeping" mode (i.e. complete shutdown,
which can be done with the "-Y" switch) but standby mode, which
simply seems to just spin down the disk.
I can't imagine there being much difference power-usage-wise, but
perhaps reliability/speed of wake-up.
Agreed.
Plus, as a caveat: if one really wants to save even a little more
power one could try to park the HD heads as often as possible, e.g. by
issuing very aggressive "hdparm -B" settings. But careful: that might
wear down some disks very fast, as they seem to have usually only a
limited "Load_Cycle_Count" (can be seen via "smartctl -a /dev/sdX") -
The maximum cycle count might be found in the disk specs.
I lost a disk once after only a little more than ~2.5 yrs - probably
due to power management settings. And to avoid that - on a computer
that isn't moving - I try to turn it off completely now:
"hdparm -B 255". Can also be set e.g. with "gnome-disks, drive
settings". Done with "gnome-disks" the settings even might survive
reboots ..
Regards,
Wolfgang
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