NetApp
Configuration > Network > NIS : Managing NIS : Enabling or disabling NIS slave
Enabling or disabling NIS slave
You can enable an NIS slave on your storage system to reduce traffic over your network. You can use the Edit NIS Settings dialog box to enable or disable an NIS slave on your storage system. The NIS slave is disabled by default.
About this task 
If you enable and then later disable the NIS slave, the storage system reverts back to the original configuration, in which it contacts an NIS server to resolve host names.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
In the navigation pane, click Configuration > Network > NIS.
3.
Click Edit.
4.
In the Advanced tab, either select or clear the Enable NIS slave check box, as appropriate.
5.
Schedule the caching of of NIS group information:
If you want to...
Then...
Immediately update the NIS group information
Click Now.
Update the NIS group information at regular intervals
Click Every and specify the time interval.
6.
Click Save and Close.