6.5 Advantage Of Using A Separate Machine For The User Interface(s)

just:out, just:connect and just:live/just:play can be installed on a single machine, but there are several advantages when using separate machines for the UI and the engine:

• The actual CPU/GPU load is distributed (load balancing).
• The engine cannot be affected by user mistakes.
• Using multiple machines allows for additional fail-over for the playout components. just:connect allows you to configure a slave engine for each layer (video or FX layers). This means another physical machine takes the place of a failing machine.

When using multiple just:live/just:play instances to control the same channel it is possible to work simultaneously on a channel on a first-come first-served basis. Separating the UI from the engine also allows the user working on the machine which runs the just:live/just:play UI to turn off the machine without interrupting the playout.