Data processing system, data processing method and storage apparatus

A data processing method performed in a data processing system comprising a host system and a storage apparatus that provides one or more first memory areas for storing data read/written by the host system, the method comprising:

• a step where the storage apparatus executes, when any one of the memory areas is determined to be faulty, a first search that searches for a spare memory area that serves as a replacement for the faulty memory area, and, if a spare memory area is found in the first search, rebuilds a content of the faulty memory area in the spare memory area and then executes a second search that searches for a second spare memory area, and, if no second spare memory area is found in the second search, dynamically reserves one of the memory areas as the second spare memory area.

A storage apparatus for providing one or more first memory areas for storing data read/written by a host system, comprising:

• a reservation unit that executes, when any one of the memory areas is determined to be faulty, a first search that searches for a spare memory area that serves as a replacement for the faulty memory area, and, if a spare memory area is found in the first search, rebuilds a content of the faulty memory area in the spare memory area and then executes a second search that searches for a second spare memory area, and, if no second spare memory area is found in the second search, dynamically reserves one of the memory areas as the second spare memory area.