A method and apparatus for use in a computer system including a plurality of host computers including a root host computer and at least one child host computer. The root host computer exports at least a portion of the volume of storage to the at least one child host computer so they can share access to the volume of storage. In one embodiment, the volume of storage is stored on at least one non-volatile storage device. In another aspect, the volume of storage is made available to the root from a storage system. In a further aspect, at least a second portion of the volume of storage is exported from a child host computer to at least one grandchild host computer.