1. A method of generating a graphical portion of a graphical user interface (GUI), the graphical portion concerning aspects of a storage domain, the method comprising: illustrating a tree hierarchy and a table portion as a tree-table view; including, on the tree hierarchy, a node at a first level corresponding to a set of at least two different file systems that are simultaneously displayed and members of the storage domain; including, on the tree hierarchy, nodes representing users and groups having allocated storage at a second level reporting to the first-level node, each second-level node corresponding to a member of the set of files systems to which the first node corresponds; including, on the tree hierarchy, nodes at a third level, each third-level node corresponding to storage consumers having allocated storage capacity on the storage domain; simultaneously displaying, on the table portion, the allocated storage capacity used by the storage consumers of the at least two different file systems; and toggling between the tree-table view and a table view that shows the storage domain in a table that can be sorted based on attributes to which a column of the table belongs, wherein the storage domain includes a network-attached storage (NAS) device on which the at least two different file systems are mounted.