What method could a DBA consider for data with low immediate access probability but high preservation value?

• A. Backing up to an external drive
• B. Archiving the data
• C. Regularly deleting old data
• D. Only keeping the most recent data

Answer: (B)

Archiving the data is indeed the most suitable method for managing data that has low immediate access probability yet holds significant preservation value. This practice involves moving older or less frequently accessed data to a separate storage system that is designed specifically for long-term storage and retrieval, rather than keeping it in active, high-performance environments.

Archived data can still be preserved securely for future use, which is essential for compliance with regulations, historical reference, or even potential future business needs. The archiving process typically optimizes storage costs and helps maintain performance in active databases by reducing the volume of data requiring immediate backup and restoration capabilities.

In contrast, backing up to an external drive, while useful for protection against data loss, generally emphasizes replication for immediate access rather than long-term preservation. Regularly deleting old data undermines the goal of maintaining high preservation value, as it results in permanent loss of potentially valuable information. Similarly, just keeping the most recent data conflicts with the need to retain historical information that may be valuable in the future. Overall, archiving strikes the necessary balance between preserving important data and managing storage efficiency.