If you are setting up a domain for the first time, you should plan for demand and maintenance before creating zones.
It is important to determine how you divide your domain or subdomains into zones, how to best serve network demand, access to the Internet, and how to negotiate firewalls. These factors can be complex and must be dealt with case-by-case. Refer to authoritative sources such as the O'Reilly DNS and BIND book for in-depth guidelines.
If you configure a Domain Name System (DNS) zone as a dynamic zone, you cannot make manual changes to zone data while the server is running. Doing so might cause interference with incoming dynamic updates. If it is necessary to make manual updates, stop the server, make the changes, and then restart the server. Dynamic updates sent to a stopped DNS server will never be completed. For this reason, you might want to configure a dynamic zone and a static zone separately. You can do this by creating entirely separate zones, or by defining a new subdomain, such as dynamic.mycompany.com, for those clients that will be maintained dynamically.
i5/OS® DNS provides a graphical interface for configuring your systems. In some cases, the interface uses terminology or concepts that might be represented differently in other sources. If you refer to other information sources when you are planning for your DNS configuration, it might be helpful to remember the following items: