Discover the most storage-efficient server backup strategy for CompTIA Security+ SY0-601 Exam. Learn how incremental and differential backups minimize storage while ensuring data protection.
Table of Contents
Question
A local server recently crashed and the team is attempting to restore the server from a backup. During the restore process, the team notices the file size of each daily backup is large and will run out of space at the current rate. The current solution appears to do a full backup every night.
Which of the following would use the least amount of storage space for backups?
A. A weekly, incremental backup with daily differential backups
B. A weekly, full backup with daily snapshot backups
C. A weekly, full backup with daily differential backups
D. A weekly, full backup with daily incremental backups
Answer
D. A weekly, full backup with daily incremental backups
Explanation
A weekly, full backup with daily incremental backups is the most storage-efficient backup strategy among the given options. Here’s why:
- Full backup: A full backup creates a complete copy of all data, providing a reliable restore point. Performing a full backup weekly ensures a solid foundation for the incremental backups.
- Incremental backups: Incremental backups only store the changes made since the last backup (either full or incremental). This approach minimizes storage usage as it only captures the delta between backups, resulting in smaller backup file sizes.
Comparison with other options:
- Option A (weekly incremental with daily differential) is less efficient because differential backups store all changes since the last full backup, resulting in larger backup sizes over time.
- Option B (weekly full with daily snapshots) is less efficient because snapshots capture the entire system state, requiring more storage than incremental backups.
- Option C (weekly full with daily differential) is less efficient than option D for the same reason as option A.
By combining a weekly full backup with daily incremental backups, you strike a balance between storage efficiency and the ability to restore data from any point in time. This strategy minimizes storage usage while ensuring comprehensive data protection.
CompTIA Security+ 2021 SY0-601 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA Security+ 2021 SY0-601 exam and earn CompTIA Security+ 2021 SY0-601 certification.