We run 2008 R2k and have 2 writable DCs in our site and 2 read only DCs. I just found out that the two read only DCs are still showing up in AD even though they were removed from the site a year ago.
Weve been having a slow login issue which is why I suspect it could be tied to this issue.
I have no way of knowing if the read only DCs were demoted properly in AD. I dont think they were or else why would they still be showing up in AD when I search for computers in our site and theyre showing up as "Read-only Domain Controller" s?
Our admin doesnt want to remove them yet and Im not sure why not. Couldnt this be causing our slow login issue?
He assures me that new workstations booting up wont be trying to contact these permanently offline DCs. I'm not so sure being as they werent demoted properly. If they were demoted properly I shoudnt see them at all in AD.
Whats your take on this?