Method, electronic device and computer program product for accessing storage system

Techniques for accessing a storage system involve: based on a detection that a first host configured to use a first protocol to access a storage system is connected to the storage system, determining a source logical storage space from a second group of logical storage spaces associated with a second protocol. The second protocol is different from the first protocol. The techniques further involve: determining, from a first group of logical storage spaces associated with the first protocol, a target logical storage space to which the source logical storage space is mapped. The techniques further involve: allocating the target logical storage space to the first host, so that the first host accesses the storage system via the target logical storage space. Accordingly, suitable protocols can be flexibly used to access the storage system without cumbersome and time-consuming operations.