A virtual private volume control system, wherein in a data frame of a command issued from an OS, an ID number for identifying the OS is attached to the command; inside the disk apparatus, exclusion/priority processing is controlled, based on the ID number; thereby enhancing the transaction processing...http://www.google.de/patents/US20020099901?utm_source=gb-gplus-sharePatent US20020099901 - Storage system and virtual private volume control method
