Put the drive into idle (low-power) mode, also setting its standby timeout

Get and set SATA and IDE hard drive parameters.
More information: <https://manned.org/hdparm>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

sudo hdparm -S {{standby_timeout}} {{device}}

click the source code to copy install hdparm on any operating system with command-not-found.com