WD Elements Desktop is connected to Vero4k - How to put it into Idle mode?

[cocomic]

External USB HDD is not spinning down

For anybody else having trouble with usb hard disks not spinning down (or spinning up shortly after having spun down), it all might be caused by SMART trying to read stats from the disk every x minutes. To fix it, make a copy of /usr/lib/udisks/udisks-helper-ata-smart-collect (rename it to .orig or something) and then create a new file with the same name, where you type #!/bin/sh exit 0 chmod 755 and you should be fine (at least it worked on my WD Mybook).

That is the only solution that makes my WD spin down, 2 minutes job.