Hey there, I've been playing with a fairly large SAMBA4 domain (~29,500 objects) that has been freshly migrated from Samba3. I created a fairly generously specced VM called "sdc-us0" and then ran the following command: sudo samba-tool domain join 'ad.digipen.edu' DC -Uadministrator --realm='ad.digipen.edu' It works, however it takes an *extremely* long time to get past the "Committing SAM database" step - we're talking anywhere from 12 to 24 hours (it was 7 hours and 30 minutes in when I left the office, so I don't know the exact length of time it takes). During that time little IO is seen and a single core is pegged to 100% utilization. Am I doing something wrong? I was under the impression that creating and joining a new DC should be significantly faster than that. Both machines are running Debian 7 "Wheezy" with Samba 4.1.7 installed from backports. Thanks, ~ Benjamin