(1) Storage within a storage facility that is configured such that multiple homogenous or divergent hosts can access the storage concurrently. The storage has a uniform appearance to all hosts; the host programs that access the storage must have a common model for the information on a storage device.
(2) An area of storage that is the same for each virtual address space. Because it is the same space for all users, information stored there can be shared and does not have to be loaded in the user region.