I use my Raspberry mainly as a fileserver. I've attached 3 harddrives, 1 of them being an SDD and 2 Mechanical 3.5 Drives. When powered on, everything seems to work. However, when booting, the initial boot of both the mechanical drives draws too much energy, so the Pi crashes and is stuck in a loop.
This makes rebooting dangerous since I cannot trust the PI to be reliable with those HDDs attached. What can I do?