Data tiering with erasure coding using traffic estimation and feedback control

A computerized method comprising:

• obtaining traffic history data associated with a data extent to be stored in a storage system;
• generating estimated future traffic data of the data extent using a traffic estimation model, with the obtained traffic history data as input to the traffic estimation model;
• calculating a current storage system constraint using the obtained traffic history data;
• determining a constraint adjustment value using a feedback controller, with the calculated current storage system constraint as input to the feedback controller;
• refining the constraint adjustment value using a filter that categorizes the data extent;
• determining an erasure coding (EC) format for the data extent using the estimated future traffic data and the refined constraint adjustment value;
• and
• storing the data extent in the storage system using the determined EC format.

A computer storage medium having computer-executable instructions that, upon execution by a processor, cause the processor to at least:

• obtain traffic history data associated with a data extent to be stored in a storage system;
• generate estimated future traffic data of the data extent using a traffic estimation model, with the obtained traffic history data as input to the traffic estimation model;
• calculate a current storage system constraint using the obtained traffic history data;
• determine a constraint adjustment value using a proportional, integral, derivative (PID) controller, with the calculated current storage system constraint as input to the PID controller;
• refine the constraint adjustment value using a filter that categorizes the data extent;
• determine an erasure coding (EC) format for the data extent using the estimated future traffic data and the refined constraint adjustment value;
• and
• store the data extent in the storage system using the determined EC format.