This invention provides a control technique of a data processing system, in which functions of a highly-functional high-performance storage system are achieved in an inexpensive storage system so as to effectively use the existing system and reduce the cost of its entire system. This system has a RAID...http://www.google.de/patents/US7565502?utm_source=gb-gplus-sharePatent US7565502 - System managing a plurality of virtual volumes and a virtual volume management method for the system
System managing a plurality of virtual volumes and a virtual volume ...
