IP vs DNS - j5 - 28.0 - Installation & Upgrade - Hexagon PPM

j5 Installation and Upgrade

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Decide in advance whether your failover environment will take over the IP address of the production server, or whether the DNS entry will be changed to point the domain name at the failover IP address. Ensure that firewall rules between client machines, database servers and other infrastructure cater for this eventuality. If DNS changes are going to be used, ensure that there is a short time to live (TTL) for the entry; we recommend 5-10 minutes.