The technical term used for a backup in another location is an off-site backup.
An off-site backup is a copy of a business’ production system data that is stored in a geographically different location than the production system. Off-site backup includes:
- Off-site server backup, where production data is backed up to an offsite server
- Backing up to a media device, such as tape, which is then transported and stored off-site
- Backing up to a private or public cloud
Acronis, a company providing backup products and services
Off-site backup is a method of backing up data to a remote server or to media that is transported off site.
TechTarget, a tech media publication
The term *archive has been proposed, but that refers to a collection of multiple files or datasets into a single file or data stream, such as a ZIP archive or tar "tape archive".