Arch Linux

aardwolf

Member

From: Belgium

Registered: 2005-07-23

Posts: 310

[SOLVED] smartctl -i -n standby, and hdparm -C, both wake up disk

According to https://wiki.archlinux.org/title/hdparm … king_it_up, using smartctl -i -n standby /dev/sda should not wake up the disk

However, if I do hdparm -Y /dev/sda, and then after the disk spun down, do smartctl -i -n standby /dev/sda, I can hear the disk spinning up again. So it's not working correctly.

In addition, I read that "hdparm -C /dev/sda" should not wake up the disk, and doesn't do so for cases where "smartctl -i -n standby /dev/sda" wakes it up.

But for me, doing "hdparm -C /dev/sda" also makes the disk spin up!

What could be wrong here? Why do the above commands not wake up the disk for some people, but wake it up for me? Is this related to software, or hardware (the disk itself)? It's a WD Red Plus 12T disk (WD120EFBX).

Thanks!

Last edited by aardwolf (2022-11-05 00:47:20)

frostschutz

Member

Registered: 2013-11-15

Posts: 1,647

Re: [SOLVED] smartctl -i -n standby, and hdparm -C, both wake up disk

Does it work with hdparm -y instead of -Y?

aardwolf

Member

From: Belgium

Registered: 2005-07-23

Posts: 310

Re: [SOLVED] smartctl -i -n standby, and hdparm -C, both wake up disk

Yes with that it stays off, that's good to know, thanks!

so -Y is sleep and -y is standby, both make the disk stop spinning, but sleep makes it wake up again when checking SMART.