Yes Zbot - it indeed did!  We had to extend the AD Schema (instructions below).  Not only did it correct the SID issue, it also substantially increased the speed of our end user connections to the SMB Shares.  --------  From Knowledge Base Article 16559 - OneFS:  How to configure OneFS and Active Directory for RFC2307 compliance Configure Active Directory to allow search queries on UID, GID and Alias by publishing RFC 2307 attributes to the global Catalog:  1.  Log on to Windows Server Active Directory using an Administrator Account 2.  Load the Active Directory Schema Snap-in To install the Active Directory Schema Snap-in, see the following Microsoft TechNet Articles: For Win Server 2008 RS, see install the Active directory Schema Snap-in For cause:  The UID attribute is not set to replicate to the AD Global Catalog and the cluster requests UID resolution to a DC without this attribute available. (this makes total sense as to why it would show names sometimes and not other times - it was hitting a DC without the UID attributes). 3.  Navigate to the Attributes folder and ensure that the following check boxes are selected for each attribute: CAUTION!  Do not modify any other check boxes. A.  gidNumber:  Select the Replicate this attribute to the global catalog check box. B.  uidNumber:  Select the Replicate this attribute to the global catalog and the Index this attribute check boxes. C.  uid:  Select the Replicate this attribute to the global catalog and the index this attribute check boxes.  The attributes are copied to the global catalog.  Depending on your system configuration, this process might take up to 24 hours to complete.  The storage team did configure RFC 2307 on the Isilon as well, prior to our doing the AD Schema update.  Please post back if this fixes your SID issue.  Good Luck!!!
Hello,  I am setting up a new Isilon which currently has OneFS Version: 7.2.1.2.  When I view permissions on a folder in a SMB share the SIDs only resolve about half the time:  [IMAGE]  Does anyone know how I can resolve this?  Thank you!!
OneFS 7.2.1.2 - CIFS/SMB SIDs not resolving