What is NOT a valid method of backing up data daily?

RAID configurations are primarily designed for redundancy and performance rather than serving as a backup solution. While RAID can provide data redundancy and improve access speeds, it does not protect against data loss from events such as accidental deletion, file corruption, or catastrophic failures that affect the entire RAID array. Therefore, it does not fulfill the criteria of a backup method because it is not designed to create separate, recoverable copies of data like local backups, cloud backups, or external drive backups do.

Local backups, cloud backups, and external drive backups all involve creating distinct copies of data that can be used to restore original information in case of data loss, making them valid daily backup methods. In contrast, RAID configurations should be viewed more as a storage solution that enhances availability and performance but lacks the essential characteristics of a backup method.