Hello. I just got into the field as an onsite network technician. I'm at a business where there are about 15-20 end users running windows 7 professional on a network with a windows 2008r2 server that plays the role of DHCP and DNS server as well as some shared storage. The site had previously used roaming profiles, but as business increased and more data had to be moved across the network, congestion occurred in full force. I have changed the GPOs that apply to the users to keep their data locally. AD still manages the profiles. This change has caused any login attempts to take 20-35 minutes. During any login, the server maxes out disk usage. What could be causing these things? Thank you for anything you can suggest.