NetApp
7-mode/HA pair/V-Series : Configuration : Network : DNS : Understanding DNS : How to configure DNS to maintain host information
How to configure DNS to maintain host information
You can maintain host information centrally using DNS. With DNS, you do not have to update the /etc/hosts file every time you add a new host to the network.
If you have several storage systems on your network, maintaining host information centrally saves you from updating the /etc/hosts file on each storage system every time you add or delete a host.
If you configure DNS later, you must take the following actions:
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Specify DNS name servers.
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Specify the DNS domain name of your storage system.
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Enable DNS on your storage system.
If you want to use primarily DNS for host-name resolution, you should specify it ahead of other methods in the hosts section of the /etc/nsswitch.conf file.
Correct host-name resolution depends on correctly configuring the DNS server. If you experience problems with host-name resolution or data availability, check the DNS server in addition to local networking.