What version of OneFS are you using? Are you aware if your Domain Controllers were recently updated with Microsoft security update MS15-027?   [URL] If so, we need to make sure you cluster is updated to address the issue documented below.  199379 : ETA 199379:UPDATE: Isilon OneFS: Microsoft security update MS15-027 may cause data to beunavailable to SMB clients that are authenticated to Isilon clusters through anActive Directory server that relies on the NTLM authentication protocol             [URL]  
Hello all, I am new to EMC in general and built a test isilon simulator for my company for testing. ijust had one issue with the setup where after ijoined the Isilon server to a domain, it is able to authenticate via kerberos when using FQDN however, when using a different computer off of the domain and access the smb share via IP address ihave to use the local credentials of isilon I.E( root). I was wondering in my setup where can I correct my issue in allowing Kerberos authentication via IP address instead of only IP address how can ido it?
Isilion issue with kerberos authenticating via IP address