hd-idle from home:X0F:HSF project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:X0F:HSF/openSUSE_Tumbleweed/home:X0F:HSF.repo zypper refresh zypper install hd-idle