Figure 66 Parallel restore session flow
In a parallel restore, Data Protector reads multiplexed data for all selected objects and assembles the parts needed for all the objects on the fly, sending the right data to the right Disk Agents. This improves performance when reading from the media. The performance is additionally improved if the selected objects are written to different physical disks. In this case, data is copied to multiple disks at the same time.
Fast multiple single file restore
Data Protector uses discontinuous object restore to improve restore performance. After restoring a specific file or tree, Data Protector repositions itself directly on the next file or tree on the medium, if there's at least a single segment between the files or trees, and continues the restore.
Within an individual restore object you can start multiple Disk Agents. This way the restoring of multiple single files that are located all over the medium is much faster than if Data Protector were to traverse the medium.
Object copy sessions
This section describes how an object copy session is started, what happens during the session, and the processes and services involved.
Concepts guide | 229 |