A method for improving storage system performance is disclosed. The method includes cloning information stored in a first unit of storage in a second unit of storage. The first unit of storage is stored in a first cache maintained by an upper-level system, while the second unit of storage is stored in...http://www.google.com.tw/patents/US7426611?utm_source=gb-gplus-share專利 US7426611 - Method and system for improved storage system performance using cloning of cached data
