Provided are a method, system, and article of manufacture, wherein a storage manager application implemented in a first computational device maintains a virtual logical volume that represents a plurality of segments of a linear storage medium of a secondary storage, wherein the virtual logical volume...http://www.google.com/patents/US7975100?utm_source=gb-gplus-sharePatent US7975100 - Segmentation of logical volumes and movement of selected segments when a cache storage is unable to store all segments of a logical volume
