Shoji Kodama

Direct access storage system with combined block interface and file interface access

Data replication with rollback

Multiple processor data processing system with mirrored data for distributed access

Remote storage system and method

Method and apparatus for disk array based I/O routing and multi-layered external storage linkage

Storage system and snapshot management method

File sharing system with data mirroring by storage systems

Method and system for data lifecycle management in an external storage linkage environment

Remote copy with path selection and prioritization

Storage controller and data management method