Config (I'm assuming) means settings like, Snapshot tasks, Rsync, Replication tasks, are exclusive to the OS installation.
Whereas the data, (the DB, checksums, Directories, Files, Snapshot info, Jails) are part of the pool(s) ..?
I know I should spend more time understanding permissions, but I'm thinking users and their respective-rights are in the OS ..?
Versus: Users nor the directories to which they have rights aren't in any way integrated into a Pool(s) as metadata..?
(I still have directories from back when I owned a QNAP, of which have properties (permissions?) ... which make:
Deleting, moving, renaming, etc., impossible (sometimes with a 'red x' on directories) an issue I need to resolve.)