Redundancy
The LIOBOX² can be used simultaneously with 2 computers running in sync: one Main and one Spare. This allows the Spare computer to take over in case of a Main computer failure, therefore disrupting neither the show nor its control.
For audio redundancy, a redundant sound card should also be used.
When the Spare script is loaded into the second computer, this identifies the LIOBOX² as the backup computer.
The LIOBOX² therefore sends information to the Spare unit but does not display feedback from the Spare computer, to avoid conflicts with the Main computer.
When the Spare unit is connected, the LIOBOX² compares the song lists of the Main and Spare computers to ensure that the sessions are identical.
See also the connection status indicators, and the Pro Tools specifics in Redundancy in Pro Tools.