We help IT Professionals succeed at work.

DFS suddenly screwed up?

71 Views
Last Modified: 2017-11-16
We had a problem this morning where suddenly, inexplicably after months of running with no issue, some of users were routed to the wrong file share via a DFS path.  Here's the setup:

We have two sites: Corporate (actually called Default-First-Site-Name) and DR.  In AD Sites/Services, we've defined these Sites by IP ranges - our 10.12.XXX.XXX ranges are Corporate and our 10.13.XXX.XXX ranges are DR.  In DFS, we a folder target (\\blah\public\profiles) with two paths: one for Corporate and one for DR.  The DR file share (obviously) is located on a file server in our DR site, and is a mirrored copy of the file share located in our Corporate site.

This has never been a problem, until today, when suddenly all of users reported really slow sessions.  Some quick research revealed that users were drawing their profiles from our DR site thru the DFS path for some unknown reason.  Nothing had changed in the configuration in months.  We disabled the DR path in DFS, had everyone reboot, and all was back to normal.

So, how can this happen?  My understanding is that when you logon to the domain, you'll be assigned to the appropriate Site based on your IP, and then you'll resolve your DFS paths based on your Site, full stop.  Is there some sort of load balancing going on underneath the hood that I don't know about that might elect to pop someone over to a different path that isn't supposed to be available to that Site?

Thanks!
Matt
Comment
Watch Question

This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION

Author

Commented:
Addendum to my last comment: Actually, I'll be toggling the 'Exclude targets outside of my client's site' flag on the Folder Target group itself, not the Namespace, so that I don't screw the rest of those folders up.

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.