Internet Service Providers~(ISP) furnishing cloud storage services usually rely on big data centers. These centralized architectures induce many drawbacks in terms of scalability, reliability, and high access latency as data centers are single points of failure and are not necessarily located close to the users. This paper introduces Mistore, a distributed storage system aiming at guaranteeing data availability, durability, low access latency by leveraging the Digital Subscriber Line~(DSL) infrastructure of an ISP. Mistore uses the available storage resources of a large number of home gateways and points of presence respectively for content storage and caching facilities reducing the role of the data center to a load balancer. Mistore also targets data consistency by providing multiple types of consistency criteria on content and a versioning system allowing users to get access to any prior versions of their contents.