Hi,
SMB 3.0 (newer versions)only available in cDot/ONTAP (Precisely cDOT 8.2 and later). Hence, it is not going to work with Data ontap 7-mode (as SMB server, 7-mode OS version doesn't matter, SMB 3.0 is never introduced in 7-mode and will never be b'cos the code development is stopped, cDOT/ONTAP is the only way forward wrt SMB3.0 support).
If you want NetApp (as SMB Server) to serve SMB3.0 version to clients, then you must be on cDOT/ONTAP and client must also support the higher version (For them to negotiate).
To verify max SMB versions supported on your 7-mode Data Ontap, simplest way is to run this command:
7-mode> options cifs.smb
Check the SMB2.0 support on your ontap version, this option must be enabled:
filer> cifs.smb2.enable on
Note: When this option is enabled, the Filer uses SMB 2.0, provided client also supports SMB 2.0
You can try this command from Linux host to mount CIFS shares hosted on NetApp 7-mode:
[root@redhat /]# mount -t cifs -o username=Administrator,password=<password>,domain=ABC.COM //192.x.x.x/share1 /mnt/smb
Once the command is successful, go to /mnt/smb and check if you are able to see shares.
Then, on the filer side:
filer> cifs sessions -t [This command will tell you which SMB version is currently negotiated]
Note: Also, check the smb version running on your client and the default client smb version mentioned in the smb.conf file.
Thanks!
