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Configuration > Network > DNS : Understanding DNS : How to use dynamic DNS to update host information
How to use dynamic DNS to update host information
You can use dynamic DNS updates to prevent errors and save time when sending new or changed DNS information to the primary master DNS server for your storage system's zone. Dynamic DNS allows your storage system to automatically send information to the DNS servers as soon as the information changes on the system.
Without dynamic DNS updates, you must manually add DNS information (DNS name and IP address) to the identified DNS servers when a new system is brought online or when existing DNS information changes. This process is slow and error-prone. During disaster recovery, manual configuration can result in a long downtime.
For example, if you want to change the IP address on interface e0 of storagesystem1, you can simply configure e0 with the new IP address. The storage system storagesystem1 automatically sends its updated information to the primary master DNS server.
Note: Data ONTAP supports a maximum of 64 Dynamic Domain Name Server (DDNS) aliases.