Insufficient storage error when restoring a Netlify backup and transferring custom domains

Answer

Restoring a Netlify site backup to a newly created site does not copy over the original site's custom domain associations or DNS configuration.

Confirmed facts

• Netlify site backups contain only file content, build settings, environment variables, and deployed assets. Custom domain records and DNS zone data are explicitly excluded from the backup archive.
• Because domain data is not stored, the behavior is the same for Free, Pro, and Team plans; the only plan‑dependent factor is the maximum number of domains you can re‑add after the restore.
• If the target site’s storage quota is exceeded, the restore will fail with an "insufficient storage" error before any domain considerations are relevant.

Steps to verify and restore domains after a backup restore

1. After the restore completes, open the new site’s dashboard and go to Site settings → Domain management.
2. Confirm that the domains previously attached to the source site are absent.
3. Add each custom domain again using the Add custom domain button.
4. If you use Netlify‑managed DNS, navigate to the DNS tab and ensure the zone for the domain exists; add the required ALIAS/A/CNAME records as shown in the UI.
5. Save changes and wait for DNS propagation (usually a few minutes).
6. Verify externally with a tool such as dig or nslookup that the domain resolves to the new site’s Netlify URL or IP address.

Missing diagnostic detail

To determine whether the "insufficient storage" error will block the restore, please confirm: What is the current storage usage and quota of the target site? If usage exceeds the quota, free up space or upgrade the plan before attempting the restore.