Scheduling of reconstructive i/o read operations in a storage environment

A method for use in a computing system, the method comprising:

• receiving a read request targeted to a data storage medium comprising a plurality of storage devices configured to store data in at least one RAID group;
• identifying at least a first storage device of the plurality of storage devices which contains data targeted by the read request;
• and
• generating a reconstruct read request configured to obtain the data from one or more devices of the plurality of storage devices other than the first storage device, in response to either detecting or predicting the first storage device will exhibit variable performance, wherein the variable performance comprises at least one of a relatively high response latency or relatively low throughput.

A computer readable storage medium comprising program instructions, wherein when executed by a processing device, the program instructions are operable to:

• receive a read request targeted to a data storage medium comprising a plurality of storage devices configured to store data in at least one RAID group;
• identify at least a first storage device of the plurality of storage devices which contains data targeted by the read request;
• and
• generate a reconstruct read request configured to obtain the data from one or more devices of the plurality of storage devices other than the first storage device, in response to either detecting or predicting the first storage device will exhibit variable performance, wherein the variable performance comprises at least one of a relatively high response latency or relatively low throughput.