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Files changed since Wednesday (a day before)
A grandfather file is typically considered a temporary file. It is used for backup purposes and retains older versions of files to allow for recovery if needed. Once the retention period is reached or if the backup is no longer necessary, the grandfather file can be deleted or overwritten. Thus, it is not intended to be a permanent storage solution.
The grandfather-father-son (GFS) backup system involves creating multiple generations of backup data. This system allows for the restoration of data from different points in time, providing flexibility and resilience against data loss. The grandfather, father, and son represent the different backup levels in this hierarchy, typically consisting of weekly, daily, and hourly backups respectively.
Grandfather, Father, Son
monthly, weekly, and daily backup jobs
An incremental backup is a useful way to backup data while saving hard drive space. These backups contain only the changes made to software since the previous backup was made.
The term "grandfather file" typically refers to a backup or archive system where older data is retained while newer versions replace the old ones. Whether a grandfather file is permanent depends on the specific policies of an organization regarding data retention and backup. In some cases, these files may be kept indefinitely, while in others, they might be deleted after a certain period. Therefore, it's essential to refer to the specific data management policies in place to determine the permanence of a grandfather file.
Full
A full backup contains all files that you have chosen to have backed up. A differential backup will only contain the files that have changed since the last full backup. One commonly used schedule is to do a weekly full backup, and daily differential backups.
It is impossible to restore it to the first backup because iTunes doesn't contain all your backups, only the latest 10
Grandfather clocks,are not electrical or battery operated.
A full backup
yes. NovaBACKUP software for example, will scan and report files that could potentially contain viruses and cause problems to your system.