The program weigh only 198Kb and requires no installation and has a very simple to use GUI. You just have to select the External Hard Disk, the time interval and start the xSleep mode. You can set the time interval between 1 – 20 minutes.
Moreover it also includes an 8 hour customizable working day timer (default starting time is set to 9 hour), so that you can program xSleep to operate only within a specific time slot.
xSleep is a freeware and works on all Windows versions. Windows XP users required to installed .net framework 2 on their computer. It is very useful in order to eliminate the annoying lag waiting for your external drives to spool up.