cifs active directory

[xiatian]

hi,

  introduce my current environment：

    FAS3220 , VERSION: NetApp Release 8.1.3P3 7-Mode.  

   the problem: 

    the prior environment,  we created a cifs share with two windows 2008 R2 active directory.

   according to the  customer request, I  was created  two new windows 2008 R2 host. and adding to active directory

    but the  from the  netapp GUI interface ,  for domain controler display , i can see three active directory. it's not four

    active directroy

from the command line, check the domain info:

but after about ten minutes ,  will be show the following  picture, at the domain directory item, all of the active directory is  disappear.  during the cifs service is unavailable also. 

  so what's wrong for the NETAPP storage ?

[GidonMarcus]

With the old versions involved my first suspect is that SMB1 been disabled on the DC

https://kb.netapp.com/Advice_and_Troubleshooting%2FData_Storage_Software%2FONTAP_OS%2FUser_sends_reset_packet_after_Negotiate_Protocol_Request_from_th...

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/All_CIFS_shares_unavailable_-_Data_ONTAP_operating_in_7-Mode 

https://kb.netapp.com/Support_Bulletins/Customer_Bulletins/SU18

For more troubleshooting. You'll have to provide some "messages" logs output  (preferably "options cifs.trace_dc_connection on" been enabled and another domain join been attempted").

[Mjizzini · Accepted solution]

Note that 7mode system can discover all DCs but only  connect to 3 DC at the same time.