A physical drive divided into at least two logical volumes, each volume containing a plurality of data storage segments, at least some of the data storage segments in one volume being physically interleaved with at least some of the data storage segments in the other volume. The purpose of this configuration...http://www.google.com.tw/patents/US5805919?utm_source=gb-gplus-share專利 US5805919 - Method and system for interleaving the distribution of data segments from different logical volumes on a single physical drive 
