Adaptability Properties

From TAPAS Wiki

The core functional adaptability properties are grouped in three classes:

• A): Rearrangement flexibility
• B): Failure robustness
• C): Resource load awareness and control

Rearrangement flexibility

Rearrangement flexibility means that the system structure and the functionality are not fixed. Nodes, users, services, service components, capabilities, can be added, moved, removed according to needs. Mobility of persons, sessions, nodes, terminals is further seamlessly handled. New nodes and capabilities are found automatically when introduced, and needed information about changes is propagated. There is a continuous adaptation to changed environments and operation strategies/policies.

Robustness and survivability

Robustness and survivability means that the architecture is dependable and distributed, and that the system can reconfigure itself in the presence of failures. Resources and functionality are duplicated, hardware and software component failures must be detected and reconfiguration and re-initialization must take place during system operation.

QoS awareness and resource control

QoS awareness and resource control means that there is functionality for 1) negotiation about QoS and optimum resource allocation, 2) monitoring of resource utilization and 3) actions for reallocation of resources.