1. A method for handling requests in a storage system, the storage system including a plurality of storage nodes connected to each other via a communications network, the method comprising: receiving a first request at a first storage node of said plurality of storage nodes, wherein the first storage node stores a reference to a set of at least one collection object stored in the storage system, each collection object of the set including at least one of a reference to another collection object stored in the storage system or a reference to at least one data file stored in the storage system; and the first storage node, for each collection object of said set, sending a second request to another storage node of the plurality of storage nodes that stores an instance of said collection object.