[freeone3000]

It's still a separate factory making separate drives. This line even uses a different storage controller. But this is also true for luxury ranges, in general, so you may be asking for too fine of a distinction. (Their usual luxury range is the WD Red, however.)

[robhu]

A luxury range where they occasionally sneak shingled drives in without telling you https://blocksandfiles.com/2020/04/14/wd-red-nas-drives-shin...

[hinkley]

Which is why I asked. That sounds like the sort of thing that happens when it's just a label instead of a division.