Operating method for storage controller and storage system including same

An operating method for a storage controller in a storage system including a non-volatile memory (NVM), the operating method comprising:

• receiving a read command defining a read operation in accordance with a predictable latency mode of the storage system that defines a deterministic window and a non-deterministic window;
• performing the read operation during the deterministic window to generate read data;
• upon determining that the read data includes a correctable error, performing a normal error correction code (ECC) recovery operation on the read data;
• and
• upon determining that the read data includes an uncorrectable error, analyzing a metric associated with the NVM to generate metric analysis results, selecting a read recovery approach from a plurality of read recovery approaches in response to the metric analysis results, and performing a read recovery operation on the read data using the selected read recovery approach.

A storage system comprising:

• a non-volatile storage device;
• and
• a storage controller configured to control execution of memory access operations by a non-volatile memory (NVM) during a deterministic window defined in relation to a predictable latency mode of the storage system that defines the deterministic window and a non-deterministic window,
• wherein the storage controller is further configured to analyze a metric associated with the NVM and a memory access operation among the memory access operations in order to generate metric analysis results, and select an optimal memory access operation approach from a plurality of memory access operation approaches in response to the metric analysis results.