Method and system of an adaptive input/output scheduler for storage arrays

A system in a redundant array of independent disks (RAID) controller for deploying an optimal I/O scheduler type per a storage array configuration, comprising:

• a processor;
• and
• a first nonvolatile memory coupled to the processor and configured for storing a set of instructions, when executed by the processor, causes the processor to perform a method comprising:
• generating performance data by assessing respective performances of a plurality of I/O scheduler types on different RAID level test volumes with at least one I/O pattern generated internally within a storage subsystem which comprises the RAID controller;
• and
• deploying an optimal one of the plurality of I/O scheduler types and at least one performance parameter for at least one subsequent I/O operation associated with the storage subsystem based on the performance data;
• and
• a second nonvolatile memory coupled to the processor for storing the performance data and an associativeness of the performance data with respect to the plurality of I/O scheduler types for the different RAID level test volumes with the at least one I/O pattern.

A computer readable medium for deploying an optimal input/output (I/O) scheduler type per a storage array configuration having instructions that, when executed by a computer, cause the computer to perform a method comprising:

• generating performance data by assessing respective performances of a plurality of I/O scheduler types on different redundant array of independent disks (RAID) level test volumes with at least one I/O pattern generated internally within a storage subsystem which comprises the RAID controller;
• storing the performance data and an associativeness of the performance data with respect to the plurality of I/O scheduler types for the different RAID level test volumes with the at least one I/O pattern to a nonvolatile memory of the RAID controller;
• and
• deploying an optimal one of the plurality of I/O scheduler types and at least one performance parameter for at least one subsequent I/O operation associated with the storage subsystem based on the performance data and the associativeness.