Today I am going to use rickety hard drives from the 1990's to hold data while I rebuild 2 systems. You have to slap them to get them going, and the bearings are whining something nasty.
If the drives are that flaky, perhaps it would help to connect them to a separate power supply. Spin them up once and let them run instead of restarting them multiple times, slapping them each time and hoping they spin up right.