Which term describes data that can be stored as a backup but is not the main production data?

The term that accurately describes data stored as a backup and not as the main production data is "archive." Archiving refers to the process of moving data that is no longer actively used to a separate storage system for long-term retention. This allows for preserving necessary information while freeing up resources for primary operations. Archives are typically used for compliance and regulatory purposes, and as such, they are not involved in daily transactions or operations but are retained for future reference or recovery.

In contrast, replicas are copies of current data made to ensure redundancy and high availability, typically used in live environments. Versions refer to different iterations or releases of data or software, highlighting changes over time, while clones involve creating an exact copy of a system or data set for immediate use. All these terms address different aspects of data management and storage, making "archive" the most suitable word for describing data that serves as backup rather than primary production data.