Storage control of storage media subject to write amplification effects

An apparatus for performing storage control, comprising:

• an identifying module configured to identify member storage media and a hot spare storage medium in a storage system, wherein the member storage media are members of a storage medium array, and the hot spare storage medium is for joining in the storage medium array when a member storage medium fails;
• a migrating module configured to migrate data on a member storage medium having a write amplification effect to the hot spare storage medium;
• and
• an erasing module configured to perform, in the member storage medium having a write amplification effect, an erase operation on a storage medium where the migrated data is located.

A computer program product for performing storage control, the computer program product comprising:

• one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising:
• program instructions to identify member storage media and a hot spare storage medium in a storage system, wherein the member storage media are members of a storage medium array, and the hot spare storage medium is for joining in the storage medium array when a member storage medium fails;
• program instructions to migrate data on a member storage medium having a write amplification effect to the hot spare storage medium;
• and
• program instructions to perform, in the member storage medium having a write amplification effect, an erase operation on a storage medium where the migrated data is located.