No, not allways. AmigaOS (ans MorphOS) device names are entitely on your decision.
By default the partitions are named:
DH0: first partition (i.e. device, on which usually System: volume), DH1: second
BDH0: first on second disk, etc..
but you can during the creation and anytime later change this name to your favorite name ( for example KONG1: ).
I have on my Pegasos2:
bi0: ( FFS volume for booting images), DH0: (System:, SFS volume of MorphOS), DH1: (Work:, SFS volume of MorphOS) DH2: (Backup:, Ext2 volume)
ADH0: (AOSSystem:, SFS volume of AmigaOS), DH1: (AOSWork:, SFS volume of MorphOS), SWAP (AmigaOS swap), etc..