Dual writing device and its control method

Details Dual writing device and its control method Dual writing device and its control method

2008-01-09

2010-12-14

Lane, Jack A (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C709S213000, C709S214000, C709S216000

Reexamination Certificate

active

07853767

ABSTRACT:
A first storage system misrepresents an identifier of the storage system and an identifier of a volume and provides the host computer with a first volume. A second storage system misrepresents an identifier of the storage system and an identifier of a second volume as being identical to those misrepresented by the first storage system and provides the host computer with a second volume. A management computer acquires, upon detection of a failure in an access, a status of copying, a status of the first storage system, and a status of the second storage system and controls an access from the host computer with reference to the plurality of acquired statuses. Accordingly, even when a fault occurs in one of the two storage systems, a network that connects the two storage systems, or the like, the host computer can access to latest data.

REFERENCES:
patent: 7360048 (2008-04-01), Agombar et al.
patent: 7676641 (2010-03-01), Agombar et al.
patent: 2005/0073887 (2005-04-01), Hirakawa et al.
patent: 2009/0150630 (2009-06-01), Hiraiwa et al.
patent: 2009/0187722 (2009-07-01), Iwamura et al.
patent: 2000-330924 (2000-11-01), None
patent: 2003-183734 (2003-07-01), None
patent: 2005-018506 (2005-01-01), None
patent: 2006-114236 (2006-04-01), None
U.S. Appl. No. 11/454,860, filed Jun. 19, 2006, N. Maki, et al.

Affiliated with

Also associated with

Rating

Dual writing device and its control method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual writing device and its control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual writing device and its control method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4218070