Hi,
Thank you for posting in Microsoft Q&A forum.
Per my experience, we can use the Recover Secondary Site action to recover secondary site on the new server. Use a server with the same configuration as the failed server, this configuration includes its fully qualified domain name (FQDN). For detailed steps, please refer to below guides:
Detailed Guide to Recover SCCM Secondary Site
Thanks for your time. Have a nice day!
Best regards,
Simon
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