Performance based access in a storage network

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 a performance level for each set of storage units of a plurality of sets of storage units in a distributed storage network, wherein the performance level includes a number of errors detected during a period of time T;
• update performance information for the plurality of sets of storage units to produce updated performance information for the plurality of sets of storage units;
• determine, based on the updated performance information for the plurality of sets of storage units, which sets of storage units of the plurality of sets of storage units meet a minimum performance level;
• receive a set of data access requests for a set of encoded data slices stored in the plurality of sets of storage units, wherein a 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;
• facilitate execution of the data access requests for at least one of a decode threshold number of encoded data slices, a read threshold number of encoded data slices, or a write threshold number of encoded data slices by a first set of storage units of the plurality of sets of storage units storing the set of encoded data slices, wherein the first set of storage units meets the minimum performance level, wherein a decode threshold number of encoded data slices are needed to recover the data segment;
• and
• facilitate execution of the data access requests for at least one of a decode threshold number of encoded data slices, a read threshold number of encoded data slices, or the write threshold number of encoded data slices by a second set of storage units of the plurality of sets of storage units storing the set of encoded data slices, wherein the second set of storage units meets the minimum performance level.

A method for execution by a computing device in a storage network, the method comprising:

• determining a performance level for each set of storage units of a plurality of sets of storage units in the storage network, wherein the performance level includes a number of errors detected during a period of time T;
• updating performance information for the plurality of sets of storage units to produce updated performance information for the plurality of sets of storage units;
• determining, based on the updated performance information for the plurality of sets of storage units, which sets of storage units of the plurality of sets of storage units meet a minimum performance level;
• receiving a set of read requests for a set of encoded data slices stored on the plurality of sets of storage units, wherein a 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 the set of encoded data slices;
• and
• transmitting a threshold number of read requests of the set of read requests to a first set of storage units of the plurality of sets of storage units storing the set of encoded data slices, wherein the first set of storage units meets the minimum performance level.