I recently installed a pair of Uber VSA's & struggling top get  NPT & NIS working. Everytime I log into Unisphere I see:

Severity :	Critical
System :	VM-SAN03
Domain :	Local
Created :	Apr 19, 2014 10:02:08 AM
Message :	The NTP servers are not accessible or responding to the time service from [Sat Apr 19 09:01:09 2014].
Full Description :	NTP servers are not accessible and responding. It is recommended to have at least two accessible and responding NTP servers configured for the time service.\n\n The reason the NTP servers are not accessible could be because:\n 1) The host of the NTP server is down.\n 2) Network connectivity issues exist for the NTP server.\n Or,\n 3) NTPD, the service for the NTP server, on the host machine failed.\n
Recommended Action :	Verify the accessibility of NTP servers by:\n\n 1) Verify the status of the NTP server(NTPD service) on the host machine.\n Refer to the man page for NTP service on the host machine by using the commands:\n \ta) Linux - service ntpd status\n \tb) Solaris - svcs -a | grep ntp\n If the NTPD service is not running, you must restart the NTPD service on the host machine.\n Refer to the man page for the NTPD service command to restart the NTPD service by using the commands:\n \ta) Linux - service ntpd restart\n \tb) Solaris - svcadm restart ntp\n Also, restart the time service on the Data Mover from the Control Station by using the commands:\n server_date  timesvc stop ntp \n server_date  timesvc start ntp \n\n 2) Verify the connectivity of the NTP server on the host machines with the Data Mover.\n If the NTP server on the host machine has an IPv4 address, type:\n server_ping  \n If the NTP server on the host machine has an IPv6 address, type:\n server_ping6  \n If the host machine is not accesible, verify the network configuration or contact your network administrator.\n\n 3) If the host machine of the NTP server is down, you must boot the host machine and start the NTPD service. Refer to the man page of the NTP server service to start the NTP service.\n\n 4) For any other issue, you must restart the time service on the the Data Mover.\n
Event Code :	0x11103e0002

and

Severity :	Error
System :	VM-SAN03
Domain :	Local
Created :	Apr 19, 2014 10:01:19 AM
Message :	The NIS client is unable to connect to the NIS server 192.168.91.3 : RPC failure.
Full Description :	The NIS client is unable to contact the indicated NIS server. This may happen when the Data Mover cannot reach the peer NIS server due to network problems or because the NIS domain of the client does not match with the NIS domain of the server.
Recommended Action :	Check the Data Mover network interface and the router configuration. Go to Unisphere > Settings > Network Run Ping Test or run the server_ping CLI command to troubleshoot the network. Check the availability of the DNS server configured in the DNS client of the Data Mover (see server_nis and server_checkup commands). Test the connectivity to both the hostname and the IP address of the DNS server.
Event Code :	0x1310490001

My NTP server is my Windows 2008 R2 Domain controller. I am able to ping the DC (192.168.91.3) from the uber console without any issues but if I try to ping from unisphere using the "Run Ping Test" I see:

Ive checked the Control Station properties & the current date / time is almost in-line with with what the DC is set to. The DNS server IP is correct

I also added an external NTP server (213.130.44.252 - 0.uk.pool.ntp.org) to the control station but its still not able to ping.

My VSA is a VM (VMware Workststion) & has the following networking:

128.221.252.100	VM-SAN03	dart_eth0	Internal Datamover IP's
128.221.253.100	VM-SAN03	dart_eth1	Internal Datamover IP's
192.168.91.220	VM-SAN03	VMnet8> NIC1> eth0	Management - Control Station
192.168.81.221	VM-SAN03	VMnet3> NIC2>eth1 - cge0	Storage_DM_2
192.168.81.222	VM-SAN03	VMnet3> NIC2>eth3 - cge1	Storage_DM_3

My DC is on the same IP range as the Management IP

Ive checked the NTP service is running & everything looks fine.

Does anyone have any suggestions how to get this working?