Home > Storage > PowerMax and VMAX > Data Protection > Dell PowerMax: Reliability, Availability, and Serviceability > Power-up operation
During power-up, the data is written back to global memory to restore the system. When the system is powered-on, the startup program does the following:
At the end of the startup program, the system resumes normal operation when the SPS modules are recharged enough to support another vault operation. If any condition is not safe, the system does not resume operation and calls Customer Support for diagnosis and repair. In this state, Dell Support can communicate with the system and find out the reason for not resuming normal operation.