DATA STORAGE SYSTEM, METHOD AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM FOR DETERMINING HOT/COLD ADDRESS/DATA USING HASH ADDRESSES

Systems, apparatus and methods are provided for determining whether data accessed by the command in a storage system is hot or cold. An apparatus may include a first interface to be coupled to a host and a storage controller configured to: receive a command that contains an address in a data storage system; generate a set of hash addresses for the address; for each hash address of the set of hash addresses: obtain a stored hotness score associated with the hash address, update the stored hotness score to generate an updated hotness score associated with the hash address, and determine that the updated hotness score is above a hotness threshold; and determine that the address is hot.