Fastest Restore with Minimized Backup Size
Question
A technician has access to a recent full backup.
Data has changed since the last backup.
Which of the following provides the fastest restore while minimizing backup size?
Answers
Explanations
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A. B. C. D.C.
In this scenario, the technician has access to a recent full backup, but data has changed since the last backup. To minimize backup size and restore time, while ensuring all the changes are backed up, the best option is to perform an incremental backup.
An incremental backup is a backup that only backs up data that has changed since the last backup, be it a full backup or an incremental backup. Incremental backups can be scheduled to run regularly, such as every hour, and will only back up the data that has changed since the last backup. As a result, incremental backups require less storage space than full backups.
On the other hand, a full backup backs up all the data on the server, regardless of whether it has changed since the last backup. Full backups are time-consuming and require a significant amount of storage space. However, full backups are necessary for disaster recovery scenarios where the entire system needs to be restored.
A differential backup, unlike an incremental backup, backs up all the changes made since the last full backup. Differential backups are less time-consuming than full backups but require more storage space than incremental backups. Differential backups are useful when the amount of data that changes between backups is substantial.
Bare metal backups are used to create a complete copy of a server's operating system and applications. Bare metal backups are useful when recovering from a catastrophic hardware failure or when setting up a new server with the same configuration.
In conclusion, the best option to provide the fastest restore while minimizing backup size, given that data has changed since the last backup, is to perform an incremental backup.
