Managing NTFS permissions at scale on Amazon FSx for NetApp ONTAP

This article explains how to manage NTFS permissions at scale on Amazon FSx for NetApp ONTAP using storage-layer operations instead of traditional client-side tools.

• Use ONTAP security descriptors as reusable permission templates with ownership and DACL entries
• Configure inheritance flags (OI|CI) to ensure new files automatically receive correct permissions
• Create security policies linking descriptors to target volume paths for recursive application
• Apply permissions to millions of files as atomic operations, significantly faster than SMB-based tools
• Monitor background jobs to track permission updates across entire directory hierarchies
• Reapply existing policies after data migrations to maintain consistent permissions on new content
• Create separate descriptors for subdirectories to implement granular, multi-level access controls
• Update existing descriptors rather than creating new policies to preserve and add permissions

This storage-layer approach reduces permission management from hours to minutes while providing reliable, repeatable results across entire file systems without SMB protocol overhead.