92 SURGENT STUDY GUIDE REFERENCES

Question 1

Backup schemes

7113.10

Backup schemes

Answer 1

Backup schemes

There are four main schemes for backup: full backup, incremental backup, differential backup, and method of rotation. Each one has its advantages and disadvantages. The methods are usually combined to complement each other.

Incremental backups are the most efficient for minimizing backup time and storage media usage. They focus on backing up data sets that have changed since the last backup, whether a full or a previous incremental backup. This approach ensures that only the changes made since the last backup are backed up, reducing time and media usage.

Differential backups capture all files modified since the most recent full backup. While they require less storage media than a full backup, they are not as efficient in terms of time since they back up all changes since the last full backup.

Full backups copy all files and folders, offering a complete data snapshot. While comprehensive, they are less efficient regarding time and storage media usage because they require more storage space and take longer to complete.