STORAGE SYSTEM AND DATA STORAGE METHOD

PROBLEM TO BE SOLVED: To provide a storage system and a data storage method for extending a service life of a system by mounting a quick read-response flash memory in a storage system and limiting the number of writing operations of the flash memory. SOLUTION: The storage system includes: a first memory device configured to store data sent from a host system, a first memory device controller configured to control input/output of the data to/from the first memory device, an arithmetic circuit unit configured to calculate parity databased on the data, a second memory device configured to store the parity data, and a second memory device controller configured to control input/output of the parity data to/from the second memory device. Read access speed of the first memory device is faster than read access speed of the second memory device. COPYRIGHT: (C)2010,JPO&INPIT