Finally. the ALICE experiment Mass Storage System (MSS) combines a very high bandwidth (1.25 GByte/s) and every year stores huge amounts of data, more than 1 Pbytes. The mass storage system is made of: a) Global Data Storage (GDS) performing the temporary storage of data at the experimental pit; b) Permanent Data Storage (PDS) for long-term archive of data in the CERN Computing Center and finally from The Mass Storage System software managing the creation, the access and the archive of data.