How to change security style of volume from UNIX to NTFS in ONTAP 9

Applies to

ONTAP 9

Description

This article includes instructions on modifying security style of existing volume/qtree and propagating NTFS permissions to sub-folders and files in  ONTAP 9

Procedure

1. Modify security style of volume or qtree to NTFS:

::> volume modify -vserver vserver_name -volume -security-style ntfs

•     After the security style has been change, the root of the volume will be updated

  Example

  Cluster::> vserver security file-directory show -vserver Vs1 -path  /vol1

                  Vserver: Vs1
              File Path: /vol1
      File Inode Number: 96
         Security Style: ntfs
        Effective Style: ntfs
         DOS Attributes: 10
 DOS Attributes in Text: ----D---
Expanded Dos Attributes: -
           UNIX User Id: 0
          UNIX Group Id: 0
         UNIX Mode Bits: 777
 UNIX Mode Bits in Text: rwxrwxrwx
                   ACLs: NTFS Security Descriptor
                         Control:0x8004
                         Owner:BUILTIN\Administrators
                         Group:BUILTIN\Administrators
                         DACL - ACEs
                           ALLOW-Everyone-0x1f01ff-(Inherited)
                           ALLOW-Everyone-0x10000000-OI|CI|IO (Inherited)

• The only change made to any child object is the security style

  Example

  Cluster::> vserver security file-directory show -vserver Vs1 -path  /vol1/new.txt

                  Vserver: Vs1
              File Path: /vol1/new.txt
      File Inode Number: 102
         Security Style: ntfs
        Effective Style: unix
         DOS Attributes: 20
 DOS Attributes in Text: ---A----
Expanded Dos Attributes: -
           UNIX User Id: 0
          UNIX Group Id: 1
         UNIX Mode Bits: 777
 UNIX Mode Bits in Text: rwxrwxrwx
                   ACLs: -

2. Perform below steps on windows end to propagate DACL information to sub-folders and files.

• Access share from windows and navigate to Advanced option in security tab under properties
• Click on "Change" next to Owner, select an appropriate user
• Click on "Replace all child object permission entries with inheritable permission entries from this object" option and click Apply

Note: You can add/remove DACL on parent folder based on your requirement before clicking on above option.

• After this process finishes, all child objects will now show NTFS as the effective security style and will have the NTFS ACL applied
• Until this process finishes, ONTAP will enforce UNIX permissions​​​​​​