It's been a while since ive done a domain upgrade (from 2003 to 2008 R2).
I've been looking at these sites:
to help with the update. I have two new servers that i will be installing Windows 2012 R2 and making them into DC's. I will then uninstall the DC role on the two current ones.
My biggest question is, what should i be aware of when upgrading to a 2012R2 AD? Currently the functional level is 2003. The workstations are Windows 7 and above and only a few 2003 member servers. We also have a few ubuntu servers and sun solaris 11 servers that connect to shares on the network and a few net app filers and overland storage snap servers.
I want to make sure connectivity to the shares will still happen as well as being able to add devices to the AD.