Manually ejecting external HD, then remounting them without unplugging them??

My external drive spool up every once and a while and slow down my system, just for sec.

If I manually eject them, the only way I know how to get them back online is to unplug, then replug them back in.

I've tried Disk Utility, and it sees them, but doesn't mount them

I'm sure theres a way I'm missing.

Also, ideally I'd like to have my regularly sched backups wake my externals, and then put them back to sleep.

I have no need for them other than the backups.

Thanks!!!

 

wow, that was amazingly simple. Thanks!

Not familiar with scripts, but could I make on that would mount my external just prior to my autobackups?

What I should say is.... with my zero knowledge of scripts, could I do that?