Which backup method is characterized by having all backups and restores on the target?

The backup method that is characterized by having all backups and restores on the target is disk. Disk-based backup refers to storing backup data directly on a disk storage system that is accessible and designated for this purpose. This allows for efficient backup and restore processes, as the data is readily available on the storage medium during both the backup and recovery stages.

Using disk-based systems can also enhance the speed of the backup and restore operations since accessing data from a disk can be significantly faster compared to other methods like tape or USB storage, which often require additional steps for retrieval. Disk systems also support features like incremental backups, which save only the changes made since the last backup, further improving efficiency.

The other options involve different characteristics. Tape backups typically require additional steps to access and can be slower, whereas cloud backups rely on external network resources, and USB backups usually involve physical media that must be managed and transferred. These alternatives do not fit the description of having dedicated backups and restores directly on a target system as described in the question.