Embodiments include system architectures and processes for handling the provisioning, management and control of media renderers. When it is moved forward and applied with a force, first connecting members are pushed forward to slant upward and a second board portion is in contact with the ground tightly; meanwhile, the front upper ends of the first connecting members lift a first board portion upward to be away from the ground through third connecting members. Based on the first chamber temperature measurement and the heat load, it is determined that the auxiliary cooling unit can sustain the target temperature. The local system backs up, mirrors andor synchronizes its data to one or several geographically remote systems. The rotor assembly also includes a sheath extending at least partially around the root portion.