Книга: Windows Server 2012 R2 Storage, Security, & Networking Pocket Consultant

Differential and incremental backups

Differential and incremental backups

The difference between differential and incremental backups is extremely important. To understand the distinction, examine Table 11-1. As you will find, with differential backups you back up all the files that have changed since the last full backup (which means that the size of the differential backup grows over time). With incremental backups, you back up only files that have changed since the most recent full or incremental backup (which means the size of the incremental backup is usually much smaller than a full backup).

TABLE 11-1 Incremental and differential backup techniques

After you determine what data you’re going to back up and how often, you can select backup devices and media that support these choices. These options are covered in the next section.

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