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A copy of a file or data stored separately to prevent loss in case the original is damaged or lost.
系统崩溃后，我们可以从备份文件中恢复数据。
After the system crashed, we could recover the data from the backup files.
Commonly used in computing, IT, and data management contexts.
Remember that '备份文件' is a copy, not the original. Always verify the backup file's integrity before deleting the original.
Follow the 3-2-1 rule: maintain 3 copies of data, on 2 different media, with 1 copy stored offsite.
The term combines '备份' (bèi fèn, meaning 'backup') and '文件' (wén jiàn, meaning 'file'). '备份' derives from the concept of duplicating data for safety, while '文件' refers to a stored document or data set. The compound emerged in the digital age to distinguish digital copies from physical backups.
In Chinese technical contexts, '备份文件' is the standard term for digital backup files. It is often shortened to '备份' in casual speech, but the full phrase is preferred in formal or technical writing.