Second AD Domain Controller
Posted on 2011-02-25
I have a server which runs 4 virtual machines on Hyper-V, and is also a DC, DNS, DHCP. I want to obvously have a backup of this. I have two older machines which I premarily use as SQL batch operation machines.
Should I install promote a virtual machine, or one of the old physical machines? what happens when the old physical machine dies? Does that leave rouge crap in AD forever that is always causing errors? I have had this problem before on another network where one of the DCs died, and I could never get rid of some phantom issues where it was looking for the other machine first.
the only reason I could think to use a virtual machine as the secondary DC would be because I can redeploy that from backup image, and bam I have my AD back. the physical old machine I think would be the best route, but if it dies, I dont want to replace right away likely. So what happens when a secondary DC just drops off the face of the earth I guess is the real question?