Adaptive dispersed storage network (DSN) and system
A computing device includes an interface configured to interface and communicate with a dispersed storage network (DSN), a memory that stores operational instructions, and a processing module operably coupled to the interface and to the memory such that the processing module, when operable within the computing device based on the operational instructions, is configured to perform various operations. When additional unique pillar combinations of at least read threshold number of encoded data slices (EDSs) supported by EDSs may be needed, the computing device dispersed error encodes each data segment in accordance to generate additional pluralities of EDSs and distributedly stores the additional pluralities of EDSs associated respectively with the data object across the plurality of SUs within the DSN to support the additional unique pillar combinations of the at least read threshold number of EDSs.
1. A computing device comprising:
an interface configured to interface and communicate with a dispersed or distributed storage network (DSN);
memory that stores operational instructions; and
a processing module operably coupled to the interface and to the memory, wherein the processing module, when operable within the computing device based on the operational instructions, is configured to:
receive a read request for a data object from another computing device and via the DSN, wherein the data object 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 dispersed error encoding parameters to produce a set of encoded data slices (EDSs), wherein unique pillar combinations of at least a decode threshold number of EDSs of the set of EDSs provide for unique recovery of the data segment;
determine, for the data segment and based on the read request for the data object, whether a unique pillar combination of the at least the decode threshold number of EDSs is available to be assigned to the another computing device;
when the unique pillar combination of the at least the decode threshold number of EDSs is determined to be available, assign the unique pillar combination of the at least the decode threshold number of EDSs of the set of EDSs to the another computing device; and
when no unique pillar combination of the at least the decode threshold number of EDSs is determined to available: and
dispersed error encode the data segment in accordance with other dispersed error encoding parameters to generate another set of EDSs, wherein other unique pillar combinations of at least the decode threshold number of EDSs of the another set of EDSs provide for recovery of the data segment; and
assign one of the other unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs to the another computing device.
2. The computing device of claim 1 , wherein:
the data segment of the plurality of data segments is dispersed error encoded in accordance with the dispersed error encoding parameters to produce the set of EDSs that is of a first pillar width; and
the data segment of the plurality of data segments is dispersed error encoded in accordance with the other dispersed error encoding parameters to produce the another set of EDSs that is of a second pillar width that is greater than the first pillar width.
3. The computing device of claim 1 , wherein the processing module, when operable within the computing device based on the operational instructions for the data segment and based on the read request for the data object, is further configured to:
retrieve the unique pillar combination of the at least the decode threshold number of EDSs of the set of EDSs from a plurality of storage units (SUs) within the DSN that distributedly store the set of EDSs; and
provide the unique pillar combination of the at least the decode threshold number of EDSs to the another computing device via the DSN.
4. The computing device of claim 1 , wherein the processing module, when operable within the computing device based on the operational instructions for the data segment and based on the read request for the data object, is further configured to:
distributedly store the another set of EDSs within a plurality of storage units (SUs) within the DSN;
retrieve the one of the unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs from the plurality of SUs; and
provide the one of the unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs to the another computing device via the DSN.
5. The computing device of claim 1 , wherein:
at least one of the set of EDSs or the another set of EDSs is distributedly stored among a plurality of storage units (SUs) within the DSN;
a read threshold number of EDSs of the at least one of the set of EDSs or the another set of EDSs provides for reconstruction of the data segment; and
a write threshold number of EDSs of the at least one of the set of EDSs or the another set of EDSs provides for a successful transfer of the set of EDSs from a first at least one location in the DSN to a second at least one location in the DSN.
6. The computing device of claim 1 , wherein the computing device is located at a first premises that is remotely located from at least one storage unit (SU) of a plurality of storage units (SUs) within the DSN that distributedly store at least one of the set of EDSs or the another set of EDSs.
7. The computing device of claim 1 further comprising:
a SU of a plurality of storage units (SUs) within the DSN that distributedly store at least one of the set of EDSs or the another set of EDSs, a wireless smart phone, a laptop, a tablet, a personal computers (PC), a work station, or a video game device.
8. The computing device of claim 1 , wherein the DSN includes at least one of a wireless communication system, a wire lined communication systems, a non-public intranet system, a public internet system, a local area network (LAN), or a wide area network (WAN).
9. A computing device comprising:
an interface configured to interface and communicate with a dispersed or distributed storage network (DSN);
memory that stores operational instructions; and
a processing module operably coupled to the interface and to the memory, wherein the processing module, when operable within the computing device based on the operational instructions, is configured to:
receive a read request for a data object from another computing device and via the DSN, wherein the data object 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 dispersed error encoding parameters to produce a set of encoded data slices (EDSs) that is of a first pillar width, wherein unique pillar combinations of at least a decode threshold number of EDSs of the set of EDSs provide for unique recovery of the data segment, wherein the set of EDSs is distributedly stored among a plurality of storage units (SUs) within the DSN, wherein a read threshold number of EDSs of the set of EDSs provides for reconstruction of the data segment, and wherein a write threshold number of EDSs of the set of EDSs provides for a successful transfer of the set of EDSs from a first at least one location in the DSN to a second at least one location in the DSN;
determine, for the data segment and based on the read request for the data object, whether a unique pillar combination of the at least the decode threshold number of EDSs is available to be assigned to the another computing device;
when the unique pillar combination of the at least the decode threshold number of EDSs is determined to be available, assign the unique pillar combination of the at least the decode threshold number of EDSs of the set of EDSs to the another computing device; and
when no unique pillar combination of the at least the decode threshold number of EDSs is determined to available: and
dispersed error encode the data segment in accordance with other dispersed error encoding parameters to generate another set of EDSs that is of a second pillar width that is greater than the first pillar width, wherein other unique pillar combinations of at least the decode threshold number of EDSs of the another set of EDSs provide for recovery of the data segment; and
assign one of the other unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs to the another computing device.
10. The computing device of claim 9 , wherein the processing module, when operable within the computing device based on the operational instructions for the data segment and based on the read request for the data object, is further configured to:
retrieve the unique pillar combination of the at least the decode threshold number of EDSs of the set of EDSs from a plurality of storage units (SUs) within the DSN that distributedly store the set of EDSs; and
provide the unique pillar combination of the at least the decode threshold number of EDSs to the another computing device via the DSN.
11. The computing device of claim 9 , wherein the processing module, when operable within the computing device based on the operational instructions for the data segment and based on the read request for the data object, is further configured to:
distributedly store the another set of EDSs within a plurality of storage units (SUs) within the DSN;
retrieve the one of the unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs from the plurality of SUs; and
provide the one of the unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs to the another computing device via the DSN.
12. The computing device of claim 9 further comprising:
a SU of the plurality of SUs within the DSN, a wireless smart phone, a laptop, a tablet, a personal computers (PC), a work station, or a video game device.
13. The computing device of claim 9 , wherein the DSN includes at least one of a wireless communication system, a wire lined communication systems, a non-public intranet system, a public internet system, a local area network (LAN), or a wide area network (WAN).
14. A method for execution by a computing device, the method comprising:
receiving, via an interface of the computing device that is configured to interface and communicate with a dispersed or distributed storage network (DSN), a read request for a data object from another computing device and via the DSN, wherein the data object 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 dispersed error encoding parameters to produce a set of encoded data slices (EDSs), wherein unique pillar combinations of at least a decode threshold number of EDSs of the set of EDSs provide for unique recovery of the data segment;
determining, for the data segment and based on the read request for the data object, whether a unique pillar combination of the at least the decode threshold number of EDSs is available to be assigned to the another computing device;
when the unique pillar combination of the at least the decode threshold number of EDSs is determined to be available, assigning the unique pillar combination of the at least the decode threshold number of EDSs of the set of EDSs to the another computing device; and
when no unique pillar combination of the at least the decode threshold number of EDSs is determined to available: and
dispersed error encoding the data segment in accordance with other dispersed error encoding parameters to generate another set of EDSs, wherein other unique pillar combinations of at least the decode threshold number of EDSs of the another set of EDSs provide for recovery of the data segment; and
assigning one of the other unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs to the another computing device.
15. The method of claim 14 , wherein:
the data segment of the plurality of data segments is dispersed error encoded in accordance with the dispersed error encoding parameters to produce the set of EDSs that is of a first pillar width; and
the data segment of the plurality of data segments is dispersed error encoded in accordance with the other dispersed error encoding parameters to produce the another set of EDSs that is of a second pillar width that is greater than the first pillar width.
16. The method of claim 14 further comprising:
retrieving the unique pillar combination of the at least the decode threshold number of EDSs of the set of EDSs from a plurality of storage units (SUs) within the DSN that distributedly store the set of EDSs; and
providing the unique pillar combination of the at least the decode threshold number of EDSs to the another computing device via the DSN.
17. The method of claim 14 further comprising:
distributedly storing the another set of EDSs within a plurality of storage units (SUs) within the DSN;
retrieving the one of the unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs from the plurality of SUs; and
providing the one of the unique pillar combinations of the at least the decode threshold number of EDSs of the another set of EDSs to the another computing device via the DSN.
18. The method of claim 14 , wherein:
at least one of the set of EDSs or the another set of EDSs is distributedly stored among a plurality of storage units (SUs) within the DSN;
a read threshold number of EDSs of the at least one of the set of EDSs or the another set of EDSs provides for reconstruction of the data segment; and
a write threshold number of EDSs of the at least one of the set of EDSs or the another set of EDSs provides for a successful transfer of the set of EDSs from a first at least one location in the DSN to a second at least one location in the DSN.
19. The method of claim 14 , wherein the computing device includes a SU of a plurality of storage units (SUs) within the DSN that distributedly store at least one of the set of EDSs or the another set of EDSs, a wireless smart phone, a laptop, a tablet, a personal computers (PC), a work station, or a video game device.
20. The method of claim 14 , wherein the DSN includes at least one of a wireless communication system, a wire lined communication systems, a non-public intranet system, a public internet system, a local area network (LAN), or a wide area network (WAN).