Final answer:
A duplicate copy of important files for safekeeping is known as a backup, which is essential for recovering data in the event of loss or corruption.
Step-by-step explanation:
A duplicate copy of important files you need is called a backup. The process of creating backups is a critical part of data management and disaster recovery planning. By maintaining a backup, you ensure that your important files are preserved and can be restored in case the original files are lost, corrupted, or affected by events like virus attacks, hardware failures, or natural disasters. Regular backups are heavily recommended as they can make the difference between a slight computer setback and living through your own personal digital apocalypse. A duplicate copy of important files is commonly known as a "backup." A backup is a replicated version of essential data created to prevent loss in the event of hardware failures, data corruption, or accidental deletions. It serves as a safety net, allowing users to recover files and restore their systems to a previous state. Backups can be stored on external drives, cloud services, or other secure locations. Regularly creating and updating backups is a fundamental practice for data protection, ensuring that valuable information remains accessible even in the face of unforeseen events, promoting data resilience and business continuity.