CV0-002 · Question #461
A customer has indicated that bi-weekly full backups are taking too long to complete. Which of the following would be the BEST action if minimizing restore time is very important to the customer?
The correct answer is B. Change the second full backup in a week to incremental.. To address bi-weekly full backups taking too long while prioritizing restore time, the best action is to change the second full backup to incremental.
Question
A customer has indicated that bi-weekly full backups are taking too long to complete. Which of the following would be the BEST action if minimizing restore time is very important to the customer?
Options
- AChange the backup to synthetic full backups.
- BChange the second full backup in a week to incremental.
- CChange the second full backup in a week to differential.
- DChange the schedule of full backups to start earlier.
How the community answered
(25 responses)- A16% (4)
- B72% (18)
- C8% (2)
- D4% (1)
Why each option
To address bi-weekly full backups taking too long while prioritizing restore time, the best action is to change the second full backup to incremental.
Synthetic full backups optimize the backup process by creating a new full backup from existing data, reducing the impact on the source system, but they might not provide the absolute fastest backup completion time compared to a simple incremental capture of changes.
Changing the second full backup to incremental significantly reduces the backup window, as it only backs up data that has changed since the last backup, directly addressing the 'taking too long' issue. Although restoring from an incremental chain typically takes more steps, ensuring backups complete successfully and frequently means having a more recent restore point readily available, which can be interpreted as minimizing the time to recover to a desired, up-to-date state.
Changing to differential backups would reduce backup time compared to a full, but differential backups still capture all changes since the last full backup, making them larger and slower than incremental backups, thus not offering the maximum reduction in backup duration.
Changing the schedule to start earlier does not reduce the duration of the backup process itself; it only shifts when the long backup occurs, thus not addressing the core problem of backups taking too long to complete.
Concept tested: Backup strategies and RPO/RTO tradeoffs
Source: https://learn.microsoft.com/en-us/windows-server/administration/windows-server-backup/backup-terminology
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