Title:
ストレージシステム及びストレージシステムの管理方法
Document Type and Number:
Japanese Patent JP4738941
Kind Code:
B2
Abstract:
The storage system of the present invention has a simple configuration and ensures redundancy of the system. The primary storage control device (1) and the first secondary storage control device (2) are connected by a synchronous read method, and the primary storage control device (1) and the second secondary storage control device (3) are connected by an asynchronous read method. The primary storage control device (1) sets a management number (5) in the update data (6) and saves a journal data (7). The primary storage control device (1) associates the management number (5) with the update data (6) and transmits them to the first secondary storage control device (2). The first secondary storage control device (2) writes the update data (6) to the first secondary volume (2a), associates the management number (5) with the storage destination address of the update data (6) and stores them in the maintenance table (28). If the primary storage control device (1) stops, the first secondary storage control device (2) becomes anew a primary storage control device. The first secondary storage control device (2) is connected to the second secondary storage control device (2) by an asynchronous read method.
Inventors:
Kazuhide Sano
Okumoto Katsuhiro
Kenta Nise
Takashi Arakawa
Hisao Honma
Okumoto Katsuhiro
Kenta Nise
Takashi Arakawa
Hisao Honma
Application Number:
JP2005243568A
Publication Date:
August 03, 2011
Filing Date:
August 25, 2005
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G06F12/00; G06F3/06; G06F13/00; G06F13/10
Domestic Patent References:
| JP2005084953A | ||||
| JP2003122509A | ||||
| JP2004164666A | ||||
| JP2000259505A |
Attorney, Agent or Firm:
Wilfort International Patent Office