While shopping for hard drives (in the range of 8TB to 12TB) to add to my file server (running Debian 10), I'm puzzled by the 512e/4Kn in the specs (for example, this Seagate model). My understanding is that 512e and 4Kn are mutually exclusive: 512e means the physical sectors are 4k but the drive presents itself and interfaces with the host as if its sectors were 512 bytes, whereas 4Kn means sectors are 4k, period.
Can someone shed some light on this? Please notice that my question is about the meaning of
512e/4Kn as opposed to
512e alone, or
BTW, I'm trying to achieve a 4Kn setup (last time I upgraded the machine, I got specifically 4Kn drives — and sure enough,
fdisk -l /dev/sdX identifies them as physical sector size = 4096, logical sector size = 4096)