Which method properly implements a grandfather-father-son tape rotation policy?

The method that properly implements a grandfather-father-son tape rotation policy involves assigning different tapes for daily, weekly, and monthly backups. This policy is a well-established backup strategy used to ensure that data is backed up regularly and can be restored from a variety of points in time.

In this context, the "grandfather" refers to the oldest backups, typically the monthly tapes that are kept for long-term retention. The "father" represents the weekly backups that serve as an intermediate restore point. The "son" indicates the daily backups that provide the most current data. By using different tapes designated for these specific intervals, you ensure a structured and systematic approach to data recovery. This method allows for enhanced data protection, as it balances between having recent backups (daily) and more historical ones (monthly).

Other methods, while they may appear to offer a backup solution, do not follow the specific framework of the grandfather-father-son approach. For example, rotating tapes based on the days alone or simply considering the tapes' age and usage lacks the defined structure necessary for effective tiered backup retention. Proper segmentation into daily, weekly, and monthly categories is essential for the grandfather-father-son methodology, which is why assigning different tapes for each of these categories is the