Thanks that's great.
Any issues as far as updating? I'm assuming pve first, pbs 2nd (starting with second node first ofc)?
So you're backing up pve1 to pbs2 and pbs2 syncs data store to pbs1. are you running any vm/lxc on pve2 DR or it's just an 'empty' dr node? have you done pbs1 to pve1...