Abstract: A method for execution by a processing system of a dispersed storage and task (DST) processing unit comprises: receiving one or more encoded data slices for storage; storing the one or more encoded data slices in one or more memories of a set of memories; determining a level redundancy for the one or more encoded data slices; generating redundancy information for the one or more encoded data slices in accordance with the level redundancy; storing the redundancy information in another one or more memories of the set of memories; determining to update the level of redundancy; determining an updated level of redundancy based on one or more of a storage utilization level and a storage reliability level; updating the redundancy information based on the updated level of redundancy and updating storage of the redundancy information based on the updated redundancy information.

Abstract: A method for execution by a resource allocation module includes facilitating migration of a first set of encoded data slices stored at a storage unit for decommissioning to a newly commissioned storage unit, and facilitating migration of a remaining set of encoded data slices stored at the storage unit for decommissioning as foster encoded data slices to at least one other storage unit. For each foster encoded data slice, it is determined whether to facilitate migration of the foster encoded data slice to the newly commissioned storage unit. When determining to facilitate the migration of the foster encoded data slice, the migration of the foster encoded data slice to the newly commissioned storage unit is facilitated. An association of the newly commissioned storage unit and identity of the foster encoded data slice is updated in response to detecting successful migration of the foster encoded data slice.

Abstract: A computing device of a dispersed storage network (DSN) includes a memory, interface and a processing module operable to identify an encoded data slice of the set of encoded data slices to produce an identified encoded data slice. The processing module generates a set of first write requests regarding the set of encoded data slices less the identified encoded data slice, and generates a set of second write requests regarding the identified encoded data slice. The set of second write requests include the identified encoded data slice and replications of the identified encoded data slice. The processing module sends the set of first write requests to storage units of the DSN, and sends the set of second write requests to a set of storage units of the DSN, where each storage unit of the set of storage units is sent a corresponding one of the set of second write requests.

Abstract: A method for execution by a resource allocation module includes facilitating migration of a first set of encoded data slices stored at a storage unit for decommissioning to a newly commissioned storage unit, and facilitating migration of a remaining set of encoded data slices stored at the storage unit for decommissioning as foster encoded data slices to at least one other storage unit. For each foster encoded data slice, it is determined whether to facilitate migration of the foster encoded data slice to the newly commissioned storage unit. When determining to facilitate the migration of the foster encoded data slice, the migration of the foster encoded data slice to the newly commissioned storage unit is facilitated. An association of the newly commissioned storage unit and identity of the foster encoded data slice is updated in response to detecting successful migration of the foster encoded data slice.

Abstract: A method begins by storage units of a dispersed storage network (DSN) receiving a retrieval request for a data object, where each storage unit stores a unique group of encoded data slices of the data object and a local set of encoded recovery data slices. The method continues with some storage units sending the unique group of encoded data slices to a requesting computing device and with one storage unit sending an encoded recovery data slice to the requesting computing device. The method continues with the requesting computing device identifying an errant unique group encoded data slice, correcting the errant encoded data slice based on received data slices to produce an updated unique group of encoded data slices, and dispersed storage error decoding the updated unique group of encoded data slices and the unique groups of encoded data slices from other storage units to recover the data object.

Abstract: A method for execution by a processing system of a dispersed storage and task (DST) processing unit comprises: receiving one or more encoded data slices for storage; storing the one or more encoded data slices in one or more memories of a set of memories; determining a level redundancy for the one or more encoded data slices; generating redundancy information for the one or more encoded data slices in accordance with the level redundancy; storing the redundancy information in another one or more memories of the set of memories; determining to update the level of redundancy; determining an updated level of redundancy based on one or more of a storage utilization level and a storage reliability level; updating the redundancy information based on the updated level of redundancy and updating storage of the redundancy information based on the updated redundancy information.

Abstract: A method for execution by a resource allocation module includes facilitating migration of a first set of encoded data slices stored at a storage unit for decommissioning to a newly commissioned storage unit, and facilitating migration of a remaining set of encoded data slices stored at the storage unit for decommissioning as foster encoded data slices to at least one other storage unit. For each foster encoded data slice, it is determined whether to facilitate migration of the foster encoded data slice to the newly commissioned storage unit. When determining to facilitate the migration of the foster encoded data slice, the migration of the foster encoded data slice to the newly commissioned storage unit is facilitated. An association of the newly commissioned storage unit and identity of the foster encoded data slice is updated in response to detecting successful migration of the foster encoded data slice.

Abstract: A method includes identifying a data object for retrieval. The data object is encoded in accordance with first encoded parameters and stored as a plurality of sets of encoded data slices in a set of storage units. The method further includes determining whether an access metric regarding the data object exceeds an access threshold. When the access metric is equal to or exceeds the access threshold, the data object is further encoded in accordance with second encoding parameters and stored as a second plurality of sets of encoded data slices in a second set of storage units. The method further includes issuing retrieval requests to the second set of storage units regarding the second plurality of encoded data slices in accordance with a read threshold of the second encoding parameters. The method further includes recovering the data object from the second plurality of encoded data slices.

Abstract: A method begins by a set of storage units of a dispersed storage network (DSN) storing a plurality of encoded data slices, where each storage unit stores a unique sub-set of encoded data slices. The method continues with each storage unit dispersed storage error encoding at least a recovery threshold number of encoded data slices to produce a local set of encoded recovery data slices. In response to a retrieval request, the method continues with a device identifying a storage unit of an initial recovery number of storage units having a rebuilding issue and determining whether the rebuilding issue is correctable at a DSN level. When the rebuilding issue is correctable at the DSN level the method continues with the device selecting another storage unit to replace the storage unit to produce a recovery number of storage units and sending retrieve requests to the recovery number of storage units.

Abstract: A method includes determining, by a first client and a second client module, that a first data object and a second data objects are related. The method further includes dispersed storage error encoding the first data object to produce a first plurality of sets of encoded data slices and the second data object to produce a second plurality of sets of encoded data slices. The method further includes sending, by the first client module, first requests regarding the first plurality of sets of encoded data slices to a set of storage units. The method further includes sending, by the second client module, second requests regarding the second plurality of sets of encoded data slices to the set of storage units. The method further includes processing, by a binding module, remaining phases of the first and second write requests as a single write operation for the first and second data objects.

Abstract: A method for execution by a resource allocation module includes facilitating migration of a first set of encoded data slices stored at a storage unit for decommissioning to a newly commissioned storage unit, and facilitating migration of a remaining set of encoded data slices stored at the storage unit for decommissioning as foster encoded data slices to at least one other storage unit. For each foster encoded data slice, it is determined whether to facilitate migration of the foster encoded data slice to the newly commissioned storage unit. When determining to facilitate the migration of the foster encoded data slice, the migration of the foster encoded data slice to the newly commissioned storage unit is facilitated. An association of the newly commissioned storage unit and identity of the foster encoded data slice is updated in response to detecting successful migration of the foster encoded data slice.

Abstract: A method begins by a dispersed storage (DS) processing module of a dispersed storage network (DSN) sending a plurality of sets of encoded data slices to DSN memory for storage in accordance with a plurality of sets of DSN data addresses. The method continues with the DS processing module generating retrieval data that is based on a data object number and data storage information. The method continues with the DS processing module dispersed storage error encoding the retrieval data to produce a set of encoded retrieval data slices and generating a set of DSN retrieval data addresses based on the data name and on retrieval data storage information. The method continues with the DS processing module sending the set of encoded retrieval data slices to the DSN memory for storage in accordance with the set of DSN retrieval data addresses.

Abstract: A computing device of a dispersed storage network (DSN) includes a memory, interface and a processing module operable to identify an encoded data slice of the set of encoded data slices to produce an identified encoded data slice. The processing module generates a set of first write requests regarding the set of encoded data slices less the identified encoded data slice, and generates a set of second write requests regarding the identified encoded data slice. The set of second write requests include the identified encoded data slice and replications of the identified encoded data slice. The processing module sends the set of first write requests to storage units of the DSN, and sends the set of second write requests to a set of storage units of the DSN, where each storage unit of the set of storage units is sent a corresponding one of the set of second write requests.

Abstract: A method for writing a set of encoded data slices to memory of a dispersed storage network (DSN) begins by a processing module identifying an encoded data slice of the set of encoded data slices for a redundant write operation to produce an identified encoded data slice. The method continues with the processing module generating a set of first write requests regarding the set of encoded data slices less the identified encoded data slice and generating a set of second write requests regarding the identified encoded data slice. The method continues with the processing module sending the set of first write requests to storage units of the DSN and sending the set of second write requests to a set of storage units of the DSN, where each storage unit of the set of storage units is sent a corresponding one of the set of second write requests.

Abstract: A method begins by a dispersed storage (DS) processing module selecting storage pools within the DSN with available capacity for storing data of a storage group. The method continues by selecting one or more dispersed storage (DS) units within each of the selected storage pools based on a selection criteria and mapping the one or more DS units to the storage group. The method continues by receiving a write request to store a data object to the storage group and by storing the data object in at least one of the mapped one or more DS units. The method continues with the DS processing module issuing an indication unutilized storage space calculated on a proportionate basis based on storage utilized for the storage group as a percentage of total storage utilized and updating a write proportion value based on received storage utilization responses.

Abstract: A method begins by a dispersed storage (DS) processing module receiving access requests, processing data set requests and issuing access responses. The method continues by monitoring slice access requests to generate access records by either storing time stamped access records indicating identities of slices requested by a timestamp or by commonality of slice names. The method continues with determining a correlation of two or more slice access based on the access records when a correlation is greater than a correlation threshold and identifying two or more slices for co-location. The method continues when the two or more slices are not co-located by selecting one or more of the two or more slices for migration to a common memory device.

Abstract: A method includes identifying a data object for retrieval. The data object is encoded in accordance with first encoded parameters and stored as a plurality of sets of encoded data slices in a set of storage units. The method further includes determining whether an access metric regarding the data object exceeds an access threshold. When the access metric is equal to or exceeds the access threshold, the data object is further encoded in accordance with second encoding parameters and stored as a second plurality of sets of encoded data slices in a second set of storage units. The method further includes issuing retrieval requests to the second set of storage units regarding the second plurality of encoded data slices in accordance with a read threshold of the second encoding parameters. The method further includes recovering the data object from the second plurality of encoded data slices.

Abstract: When an access metric regarding an encoded data object exceeds an access threshold, a method begins by a processing module of a dispersed storage network (DSN) retrieving encoded data slices of a first plurality of sets of encoded data slices and recovering the data object utilizing first dispersed storage error encoding parameters. The method continues with the processing module re-encoding the recovered data object using second dispersed storage error encoding parameters to produce a re-encoded data object, where the re-encoded data object includes a second plurality of sets of encoded data slices. The method continues with the processing module outputting the second plurality of sets of encoded data slices to storage units of the DSN for storage therein and sending a message to retrieving devices of the DSN, where the message indicates use of the second plurality of sets of encoded data slices for the data object.

Abstract: A method begins by a dispersed storage (DS) processing module of a dispersed storage network (DSN) sending a plurality of sets of encoded data slices to DSN memory for storage in accordance with a plurality of sets of DSN data addresses. The method continues with the DS processing module generating retrieval data that is based on a data object number and data storage information. The method continues with the DS processing module dispersed storage error encoding the retrieval data to produce a set of encoded retrieval data slices and generating a set of DSN retrieval data addresses based on the data name and on retrieval data storage information. The method continues with the DS processing module sending the set of encoded retrieval data slices to the DSN memory for storage in accordance with the set of DSN retrieval data addresses.

Abstract: A method includes determining, by a first client and a second client module, that a first data object and a second data objects are related. The method further includes dispersed storage error encoding the first data object to produce a first plurality of sets of encoded data slices and the second data object to produce a second plurality of sets of encoded data slices. The method further includes sending, by the first client module, first requests regarding the first plurality of sets of encoded data slices to a set of storage units. The method further includes sending, by the second client module, second requests regarding the second plurality of sets of encoded data slices to the set of storage units. The method further includes processing, by a binding module, remaining phases of the first and second write requests as a single write operation for the first and second data objects.