A storage system, coupled to a host computer, including at least one controller receiving data from the host computer, and a plurality of memory units connected to the controller. The controller generates parity data and sends the data and the parity data to the memory units. The memory units include...http://www.google.de/patents/US7444467?utm_source=gb-gplus-sharePatent US7444467 - Storage system having a semiconductor memory device which stores data and parity data permanently
