The data stored on the polybox servers are stored on the central storage facilities of the ETH Zurich. Using the service polybox avoids the usage of external (uncontrollable) storage. Sync Clients are provided for an efficient and easy use of the service polybox for all common operating systems (mobile as well as desktop). All ETH members have access to the polybox service. On the first login on «polybox.ethz.ch» with the ETH account, an account with 50 GB of storage is created automatically.