Q: Energy Saver missing some options

Noticed today, that in my Energy Saver system pref, there are no sliders other than the one to

sleep the display. There are none to sleep the drive. I DO have the usual tick boxes for

Wake for network access etc, and the schedule startup shut down function.

Has something changed in Sierra? Or do I have a problem?

I've reset the SMC and PRAM and run first aid from Recovery. No joy.

thanks ~