Method, device and computer program product for managing storage system

A device for managing a storage system, comprising:

• at least one processing unit;
• at least one memory, coupled to the at least one processing unit and storing instructions executed by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to perform acts comprising:
• receiving an access request for target data,
• determining a storage position of the target data, the storage position indicating one of a storage device and a cache,
• determining, based on the storage position, a target element corresponding to the target data from a first replacement list and a second replacement list associated with the first replacement list, the first replacement list including at least a counting element, the counting element indicating an access count of data in the storage device, the second replacement list including a low-frequency access element, the low-frequency access element indicating a cache page with a low access frequency in the cache, and
• updating a position of the target element in the replacement list comprising the target element.

A computer program product having a non-transitory computer readable medium which stores a set of instructions to manage a storage system;

• the set of instructions, when carried out by computerized circuitry, causing the computerized circuitry to perform a method of:
• receiving an access request for target data;
• determining a storage position of the target data, the storage position indicating one of a storage device and a cache;
• determining, based on the storage position, a target element corresponding to the target data from a first replacement list and a second replacement list associated with the first replacement list, the first replacement list including at least a counting element, the counting element indicating an access count of data in the storage device, the second replacement list including a low-frequency access element, the low-frequency access element indicating a cache page with a low access frequency in the cache;
• and
• updating a position of the target element in the replacement list comprising the target element.