Another newbie question

I have a G raid and a G speed Q connected to my mac and I leave it powered up all the time. Is that safe or should I turn it off? And If I do, what is the order for turning it back on, Mac first, then hard drives or vice versa. Thanks for your patience.

They are designed to be always on, they have data center 24/7 enterprise drives inside so it is fine to leave them on.