Various systems and methods for using multiple clients for data backup are described. For example, one method involves accessing a namespace, where the namespace indicates locations of files. At least a portion of the namespace is divided into sets, where the sets correspond to a subset of the files. The files of the subset are accessed by plurality of nodes, and the accessing is based on the sets. Each of the nodes accesses the files of the subset. The nodes are used to store, at data storage, the files of the subset.