High Availability Storage Access Using Quality Of Service Based Path Selection In A Storage Area Network Environment

A computing device comprising:

• a memory containing machine-readable medium comprising machine executable code having stored thereon instructions for performing a multipath selection method;
• and
• a processor coupled to the memory, the processor configured to execute the machine executable code to cause the processor to:
• periodically poll a storage system for path information including an indication of a recommended storage controller;
• periodically determine quality of service information corresponding to a plurality of paths between a host computing device and a storage volume of the storage system, at least one of the plurality of paths including the recommended storage controller;
• identify a fault corresponding to a path of the plurality of paths that routes input/output (I/O) between the host computing device and the storage volume;
• and
• re-route the I/O of the host computing device from the path to a different path of the plurality of paths, wherein the different path is selected for the re-routing based on the quality of service information and the path information.

A non-transitory machine-readable medium having stored thereon instructions for performing a method comprising machine executable code that when executed by at least one machine, causes the machine to:

• periodically poll a storage system for path information including an indication of a recommended storage controller;
• periodically determine quality of service information corresponding to a plurality of paths between a host computing device and a storage volume of the storage system, at least one of the plurality of paths including the recommended storage controller;
• identify a fault corresponding to a path of the plurality of paths that routes input/output (I/O) between the host computing device and the storage volume;
• and
• re-route the I/O of the host computing device from the path to a different path of the plurality of paths, wherein the different path is selected for the re-routing based on the quality of service information and the path information.