Backup
Secondary copy of information
Used for recovery operations
Improves availability by enabling application to be restored to a specific point in time
Typically short-term (weeks or months)
Data overwritten on periodic basis (monthly)
Not useful for compliance
Archive
Primary copy of information
Available for information retrieval
Adds operational efficiencies by moving fixed/unstructured data out of the operational environment
Typically long-term(months,years,decades)
Data retained for analysis or compliance
Useful for compliance
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