Solved

Netapp Clustered ONTAP 8.3 CIFS issue

Posted on 2016-08-26
5
9 Views
Last Modified: 2016-09-01
We have a CNAME "DOCS" that points to a CIFS Vserver that works fine in PROD.  When In DR mode using a snapmirrored destination that uses the exact same DNS servers, the Win10 or 2012 server clients are not able to access \\DOCS in the DR system, yet the IP \\10.0.50.55 works.  \\DOCS.domain.com.\ [with a period behind the COM] works as well.  Why do IP addresses, FQDN with PERIOD, and A record names work, but the ONE "DOCS" CNAME does not???  Other CNAMES work as well.  Win7 clients do not have any issue in DR system.
0
Comment
Question by:tcloud
  • 3
  • 2
5 Comments
 
LVL 42

Expert Comment

by:paulsolov
ID: 41772645
It may be that nebios is not enabled, especially if it's AD integrated.

https://library.netapp.com/ecmdocs/ECMP12452955/html/vserver/cifs/nbtstat.html

-nbt-name <text>] - NBT Name
If you specify this optional parameter, the command displays the NetBIOS name service information only for the specified NetBIOS name.
0
 

Accepted Solution

by:
tcloud earned 0 total points
ID: 41773030
Issue ended up being SPN conflict between the PROD and DR cifs SVMs because they have different system names.

Scenario #3 resolved my issue:
https://kb.netapp.com/support/index?page=content&id=1013601&actp=search&viewlocale=en_US&searchid=1472309929657
0
 
LVL 42

Expert Comment

by:paulsolov
ID: 41773431
Did the KB provided resolve your issue?
0
 

Author Comment

by:tcloud
ID: 41773815
Yes, this stems from having two stand-alone Filers where DR is a Snapmirror destination and the SYSTEM NAME for the Cifs servers have to be unique.  When switching to DR filer, the SPNs point to the PROD system names and need to be updated to point to the DR system names.  I simply removed the SPN pointing to PROD host names and added new ones that point to DR system names and the issue was resolved.  When moving from DR back to PROD, this process has to be reversed.
0
 

Author Closing Comment

by:tcloud
ID: 41779507
KB resolved my issue completely.
0

Featured Post

Top 6 Sources for Identifying Threat Actor TTPs

Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

Join & Write a Comment

In this article, I provide some information on storage disks which go into calculations that will help you figure out how much Input/output Operations Per Second (IOPS) your disk subsystem can deliver. To effectively size & tune up applications l…
Lets start to have a small explanation what is VAAI(vStorage API for Array Integration ) and what are the benefits using it. VAAI is an API framework in VMware that enable some Storage tasks. It first presented in ESXi 4.1, but only after 5.x sup…
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

757 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now