PDU PSP Alexander Larruy CCND Product Seminars TSP base platform software HW: Std. PC boards Linux TelORB MW Corba ORB Java VM HW: Std. PC boards Linux TelORB MW Corba ORB Java VM HW: Std. PC boards Linux TelORB MW Corba ORB Java VM HW: Std. PC boards Linux TelORB MW Corba ORB Java VM HW: Std. PC boards Corba ORB Dicos Java VM HW: Std. PC boards Corba ORB Dicos Java VM HW: Std. PC boards Corba ORB Dicos Java VM HW: Std. PC boards Corba ORB Java VM Dicos + TelORB MW

PDU PSP Alexander Larruy CCND Product Seminars TSP recovery levels u Transaction rollback (can be handled by application) u Process restart or abortion. u Forlopp recovery. (Remote processes will be informed when peer side disappear) u Processor reload. (When more than one process instance is potentially affected) u Zone reload. (When database consistency is at risk, e.g simultaneous loss of more than one processor)

PDU PSP Alexander Larruy CCND Product Seminars Unplanned reconfiguration Automatic reconfiguration of processes and persistent objects, when a processor is reloaded reloading

PDU PSP Alexander Larruy CCND Product Seminars Horizontal distribution gives scalability u Vertical vs Horizontal distribution Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 5 Fn 1 Fn 3Fn 4Fn 5Fn 1Fn 2