Title:
STORAGE SYSTEM AND DATA COPYING METHOD
Document Type and Number:
Japanese Patent JP2005301590
Kind Code:
A
Abstract:
To provide a storage system equipped with a plurality of control parts to which a plurality of disk devices are connected for preparing replication in volumes in the disk device connected to the different control parts.
At the time of performing the initial copy of replication preparation, when an update I/O to the replication origin is received, update reflection to the replication destination is performed following the same I/O. After copy completion, when the pair is divided, the update position to a differential bit map set in each control part is stored, and at the time of rethink, the differential bit map is merged to one side control part, and copy processing is performed.
More Like This:
Inventors:
SATOYAMA AI
MORISHITA NOBORU
YAMAMOTO YASUTOMO
MORISHITA NOBORU
YAMAMOTO YASUTOMO
Application Number:
JP2004115693A
Publication Date:
October 27, 2005
Filing Date:
April 09, 2004
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G06F3/06; G06F11/14; G06F12/00; G06F12/16; (IPC1-7): G06F12/00; G06F3/06
Attorney, Agent or Firm:
Ichiro Suzuki
Kenjiro Take
Kenjiro Take
Previous Patent: RACEHORSE SECURITIZATION SERVER
Next Patent: DEVICE WITH NONVOLATILE MEMORY, AND MEMORY CONTROLLER
Next Patent: DEVICE WITH NONVOLATILE MEMORY, AND MEMORY CONTROLLER