Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for storage management. According to an example implementation of the present disclosure, a method for storage management includes: determining a state of cached data stored in an initial cache space of a storage system including a plurality of cache disks, the state indicating that a size of the cached data does not match a size of the initial cache space; determining, based on the state, a target cache space of the storage system; and storing at least a part of the cached data into the target cache space to change the size of the initial cache space. Therefore, the management performance can be improved, and the storage costs can be reduced.