Verify 'NAS' Services are running

/nas/sbin/getreason

Check running status of the 'DATA Movers' and view which slot is active/standby

nas_server -info -all 

Confirm the VMAX/VNX is connected to the NAS

nas_storage -check -all
nas_storage --list

Check file systems

nas_disk -list
df -h
server_sysconfig server_2 -virtual
/nas/bin/nas_storage –info –all

View VNX SP IP Addresses from the CS console

grep SP /etc/hosts | grep A_
grep SP /etc/hosts | grep B_

Check IP & DNS info on the CS/DM:

nas_cs -info
server_dns ALL

Date & Time

Control Station: date
Data Movers: server_date ALL

Change Data Mover IPs

server_ifconfig server_2 CIFS_INTERFACE down
server_ifconfig server_2 -delete CIFS_INTERFACE
server_ifconfig server_2 -create -Device Fail01 -name CIFS_INTERFACE -protocol IP 10.6.202.77 255.255.255.0 10.6.202.255
server_ifconfig server_2 -all


server_ifconfig server_2 MAIL_NFS down
server_ifconfig server_2 -delete MAIL_NFS
server_ifconfig server_2 -create -Device Fail01 -name MAIL_NFS -protocol IP 10.6.202.78 255.255.255.0 10.6.202.255
server_ifconfig server_2 -all

Check the Data Mover Logs

server_log server_2

Failing over a Control Station:

Failover:
/nas/sbin/./cs_standby -failover
Takeover:
/nasmcd/sbin/./cs_standby -takeover
Or reboot:
nas_cs –reboot

Shutdown control station

/sbin/shutdown -h now

  * Power off CS1 from CS0:
/nas/sbin/t2reset pwroff -s 1

Initiate a manual failover of server_2 to the standby Datamover:

• server_standby server_2 -activate mover

List the status of the Datamovers

• nas_server -list

Complete a full 'Health Check'

/nas/bin/nas_checkup

#check Log:# cd /nas/log/
ls
cat /nas/log/checkup-rundate.log

Confirm the EMC NAS version installed and the model name

/nasmcd/bin/nas_version
/nas/sbin/model

Restart NAS Services

/sbin/service nas stop
/sbin/service nas start

To verify NTP status, using CLI run the server_date command

server_date server_2 timesvc stats ntp

• To configure a Data Mover to use NTP :

From the Top Navigation Bar, click System > Hardware > Data Movers. 
Right click server_2 and click Properties.
Enter the IP address of the NTP server. 
Click Apply to accept the changes.

View Network Configuration:

• To display parameters of all interfaces on a Data Mover, type:

Control Station: /sbin/ifconfig (eth3 is the mgmt interface)

• Data Movers: server_ifconfig server_2 -all

Troubleshooting

Slot 2: Dns client is unable to connect to name server

server_ifconfig server_2 -all
server_ping server_2 -interface <yourinterfacenamehere> <DNS_server_IP_here>

References

• https://davidring.ie/2015/04/23/emc-vnx-list-of-useful-nas-commands/