Patent Number: 7,103,717

Title: Disk array device and data processing method thereof

Abstract: A data processing method for a disk array device capable of achieving a duplex system of data and improving performance of the same device while a quantity of processing for writing into a cache memory (through a switch) is reduced. In the disk array device, a host interface portion comprises a nonvolatile memory portion for saving data written from a host computer/server, and a data transfer control portion for transferring write data from the host computer/server to the nonvolatile memory portion and a global cache memory portion. If a write request is received from the host computer/server, a data transfer control portion transfers the write data from the host computer/server to the nonvolatile memory portion and to the global cache memory portion through a switch portion.

Inventors: Abe; Tetsuya (Fujisawa, JP), Inoue; Mitsuru (Hiratsuka, JP)

Assignee: Hitachi, Ltd.

International Classification: G06F 12/00 (20060101)

Expiration Date: 9/05/02018