セカンダリＤＮＳサーバMeanings1nounsecondary DNS servercomputing›A backup DNS server that holds a read-only copy of zone data, used for redundancy and load distribution.プライマリDNSサーバがダウンした場ば合あい、セカンダリDNSサーバが名な前まえ解かい決けつを引ひき継つぎます。If the primary DNS server goes down, the secondary DNS server takes over name resolution.
