Manipulating a distributed agreement protocol to identify a desired set of storage units

A computer readable memory device comprises:

• a first memory element that stores operational instructions that, when executed by a computing device of a dispersed storage network (DSN), causes the computing device to:
• obtain a plurality of sets of encoded data slices for storage in memory of the DSN, wherein the memory of the DSN includes a plurality of pools of storage units located throughout a geographic area, wherein a data object is divided into a plurality of data segments, and wherein the plurality of data segments is dispersed storage error encoded into the plurality of sets of encoded data slices;
• and
• identify a desired set of storage units within the plurality of pools of storage units for storing the plurality of sets of encoded data slices;
• a second memory element that stores operational instructions that, when executed by the computing device, causes the computing device to:
• generate a specific source name based on the desired set of storage units and a distributed agreement protocol (DAP), wherein the DAP identifies a set storage units of the plurality of pools of storage units based on a slice identifier and a plurality of storage mapping coefficients and wherein, when a device within the DSN executes the DAP, the device utilizes the specific source name as the slice identifier to identify the desired set of storage units;
• and
• generate a plurality of sets of slices names for the plurality of sets of encoded data slices, wherein the plurality of sets of slices names include the specific source name;
• and
• a third memory element that stores operational instructions that, when executed by the computing device, causes the computing device to:
• send a plurality of sets of write requests to the desired set of storage units regarding the plurality of sets of encoded data slices and in accordance with the plurality of sets of slice names.

A computing device of a dispersed storage network (DSN), wherein the computing device comprises:

• interface;
• memory;
• and
• a processing module operably coupled to the memory and the interface, wherein the processing module is operable to:
• obtain a plurality of sets of encoded data slices for storage in memory of the DSN, wherein the memory of the DSN includes a plurality of pools of storage units located throughout a geographic area, wherein a data object is divided into a plurality of data segments, and wherein the plurality of data segments is dispersed storage error encoded into the plurality of sets of encoded data slices;
• identify a desired set of storage units within the plurality of pools of storage units for storing the plurality of sets of encoded data slices;
• generate a specific source name based on the desired set of storage units and a distributed agreement protocol (DAP), wherein the DAP identifies a set storage units of the plurality of pools of storage units based on a slice identifier and a plurality of storage mapping coefficients and wherein, when a device within the DSN executes the DAP, the device utilizes the specific source name as the slice identifier to identify the desired set of storage units;
• generate a plurality of sets of slices names for the plurality of sets of encoded data slices, wherein the plurality of sets of slices names include the specific source name;
• and
• send a plurality of sets of write requests to the desired set of storage units regarding the plurality of sets of encoded data slices and in accordance with the plurality of sets of slice names.