Just remember to make sure it has Zorro-II interface

Anyway the
A2091 SCSI controller seems to support 32-bit LBA (2 TB) according to the datasheet for the
WD33C93B controller chip so it's likely a software issue.
That leaves the OS, so one possible solution is to create a harddisk image in UAE (emulator for Amiga) and then dump it to the harddisk using
dd. That makes RDB and filesystem to mask the fact that the disk is huge right from start.