Figure 33 Demultiplexing a medium
Consolidating a restore chain
You can copy a restore chain (all backups that are necessary for a restore) of an object version to a new media set. A restore from such a media set is faster and more convenient, as there is no need to load several media and seek for the needed object versions.
Migration to another media type
You can migrate backed up data to another media type. For example, you can copy objects from file devices to LTO devices or from DLT devices to LTO devices.
Disk staging
The concept of disk staging is based on backing up data in several stages to improve the performance of backups and restores, reduce costs of storing the backed up data, and increase the data availability and accessibility for restore.
The backup stages consist of backing up data to media of one type and later moving the data to media of a different type. The data is backed up to media with high performance and accessibility, but limited capacity (for example, system disks). These backups are usually kept accessible for restore for a period of time when a restore is the most probable. After a certain period of time, the data is moved to media with lower performance and accessibility, but high capacity for storage, using the object copy functionality. See Figure 34 on page 119.
118 | Planning your backup strategy |