Systems and methods for performing an on-demand determination of a correct set of volumes to be exported are described. A disk platter is defined to be the unit of volume migration. Volumes are added to the platter based on whether or not the volume coexists on a disk containing a volume to be expor...http://www.google.com.hk/patents/US7334007?utm_source=gb-gplus-share專利 US7334007 - Volume migration
