It is going to hung mode whenever I run Nas_checkup command on celerra.

Why below  errors are coming in nas check.

  check_CIFS_file_server_configuration
  Warning


  external

<BR /> <BR /> * <STRONG>server_2: The DNS server is not up-to-date. The IP address 10.105.2.115 of the CIFS server 'vwvickfnas01.apac.vwg' is not registered in DNS. Depending on the configured update mode (parameter dns.updateMode), the issue may concern a manual update that has not occurred on the DNS server or a Kerberos problem. </STRONG><BR />


<BR /> If the DNS update mode is manual (dns.updateMode=0), update the IP address of the CIFS server in the DNS manually. If not, try a 'server_cifs' command to figure out the problem with the FQDN. Take a look also in the logs using server_log to figure out the Kerberos issue, if any.<BR />



  2012-03-20T16:08:45+00:00
Warn


  2012-03-20T16:08:45+00:00
Data Movers
  check_domain_controller_connectivity_and_configuration
  Warning


  external

<BR /> <BR /> * server_2: PingDC failure: The compname 'vwvickfnas01' could not successfully contact the DC '*SMBSERVER' because of NT errors (SUCCESS) at step Open NETLOGON Secure Channel. Details of the issue:   ' ' DC='DC NETLOGON pipe failure'/'INVALID_COMPUTER_NAME' This issue may prevent user authentication to this domain. <BR />


<BR /> Make sure the CIFS server is correctly joined in the Windows domain. Check the server configuration (especially naming services, usermapper) and/or DC policies according to reported error.<BR />



  external

<BR /> <BR /> * server_2: The compname 'vwvickfnas01' received the GSSAPI error 'Miscellaneous failure. Server not found in Kerberos database. ' from DC '*SMBSERVER' when trying to get the compname account credential (step 'Logon IPC$). This is a Kerberos issue. Operations on Active Directory like join or GPO queries might fail. <BR />


<BR /> Check time synchronization between server and DC. Check DC is a valid Microsoft Domain Controller. Check domain or Domain Controller access policies. As a workaround, clear Kerberos credential on server cache after resetting compname account password in Active Directory.<BR />



  external

<BR /> <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC 'APACLHD00001'. Users from this domain might not be able to logon the CIFS server. <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC 'APACCKD00002'. Users from this domain might not be able to logon the CIFS server. <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC 'APACSYD00001'. Users from this domain might not be able to logon the CIFS server. <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC 'VGJ0TYSD0000008'. Users from this domain might not be able to logon the CIFS server. <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC 'APACSED00001'. Users from this domain might not be able to logon the CIFS server. <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC 'APACCKD00001'. Users from this domain might not be able to logon the CIFS server. <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC '*SMBSERVER'. Users from this domain might not be able to logon the CIFS server. <BR /> * server_2: The compname 'vwvickfnas01' received a status error ('There are currently no logon servers available to service the logon request') concerning the trusted domain '<A href="http://vgs.com.sg/" rel="nofollow noopener noreferrer">vgs.com.sg</A>' from DC 'VGJ0TYSD0000009'. Users from this domain might not be able to logon the CIFS server. <BR />


<BR /> Try to access DC using a user from the faulted trusted domain, then run the 'server_cifssupport -pingdc' command to see if DC still reports the same problem. Check DC is a valid Microsoft Domain Controller. Check domain or Domain Controller access policies.<BR />