By using the Multiple Copies attribute (sometimes referred to as Inline Tape Copy or ITC), NetBackup can create up to four copies of a backup simultaneously. The storage units must all be on the same media server and sufficient resources must be available for each copy. For example, creating four copies simultaneously in a Media Manager storage unit requires four tape drives.

The Maximum backup copies Global Attributes host property specifies the total number of backup copies that can exist in the NetBackup catalog (2 through 10). NetBackup creates either the number of copies specified under Multiple Copies, or the number of the copies that are specified as the Maximum Backup Copies property, whichever is smaller.