Data restoration using partially encoded slice requests

A computing device comprising:

• an interface configured to interface and communicate with a storage network;
• memory that stores operational instructions;
• and
• processing circuitry operably coupled to the interface and to the memory, wherein the processing circuitry is configured to execute the operational instructions, to:
• determine to restore data stored in a first set of storage units (SUs) within the storage network in accordance with first dispersed storage error coding function parameters to be stored in a second set of SUs within the storage network in accordance with second dispersed storage error coding function parameters, wherein the data includes a data object that is segmented into a plurality of data segments, wherein a data segment of the plurality of data segments is dispersed error encoded in accordance with the first dispersed storage error coding function parameters to produce a set of encoded data slices (EDSs) that are distributedly stored in the first set of SUs, wherein a first decode threshold number of EDSs are needed to recover the data segment;
• generate a plurality of partially encoded slice requests;
• and
• issue, via the interface, the partially encoded slice requests to at least a first decode threshold number of SUs of the first set of SUs to instruct a SU of the at least a first decode threshold number of SUs of the first set of SUs to generate a second decode threshold number of partially EDSs based on the first dispersed storage error coding function parameters and the second dispersed storage error coding function parameters to be combined to generate a new set of EDSs to be stored in the second set of SUs.