As I've said (though oddly I can't find the post), all my time I've named my hard disks to keep them apart. And just for fun, generally I name them with the the initials HD.
... were my first two.
From recent years:
Heavy Density (my first 1TB disk)
(Main internal one, 2TB)
(I don't yet have one named Hormonal Disaster, but maybe the next one.)