The use of a Custom Domain will have some effects on the use of regional storage.

TLS/SSL Certificate Region

If your site uses a Custom Domain name, migrating your root folder storage location will also move the SSL certificate, and this may cause a brief interruption to your service while the DNS change propagates. Your users may lose access to the site for approximately 15 minutes, so you should consider initiating the change at an opportune time.

If you are using a custom domain and change the primary region where files are hosted on your Files.com site, we will issue you new IP addresses in the new region and release your old IP addresses.

Transmission Performance

Implementing a Custom Domain, along with the associated Dedicated IPs, can have performance implications on the transmission speed of international file transfers.

The global acceleration features of regional storage are circumvented when a Custom Domain is implemented in a different region than your storage region, meaning that file transfer durations will take longer than usual. To maintain performance, we strongly recommend that your Custom Domain is implemented in the same region as your storage.

For global customers, note that all global users will be routed through the region of your Custom Domain and its Dedicated IPs. For example, if your Custom Domain is in Europe then all file transfers will be routed through Europe on their way to their final destination. This also applies to transfers to your Regional Storage. For example, if your Custom Domain is in Europe, and you have a folder that is stored in Singapore, then all file transfers to the Singapore folder will travel through Europe, even if they originate from Singapore itself.

A Custom Domain should not be used in conjunction with regional storage if global transmission performance is your priority.