A quick round-up of ISPCON vendors in the storage / back-up arena: SIMDESK offers on-demand enterprise-class storage & collaboration services. HyperOffice allows for file storage & collaboration. Many people use Gmail for storage. RBS offers a turn-key (well reviewed) remote back-up system. Forval does a lot of stuff, but I ain't sure what. Novastor - as the name implies, stor-age.