US 12,216,930 B2
Remote copy system and remote copy method
Akira Deguchi, Tokyo (JP); Nobuhiro Yokoi, Tokyo (JP); and Hiroka Ihara, Tokyo (JP)
Assigned to Hitachi Vantara, Ltd., Yokohama (JP)
Filed by Hitachi, Ltd., Tokyo (JP)
Filed on May 17, 2023, as Appl. No. 18/198,731.
Application 18/198,731 is a continuation of application No. 17/471,575, filed on Sep. 10, 2021, granted, now 11,675,523.
Claims priority of application No. 2021-031882 (JP), filed on Mar. 1, 2021.
Prior Publication US 2023/0305731 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/065 (2013.01) [G06F 3/061 (2013.01); G06F 3/0683 (2013.01)] 14 Claims
OG exemplary drawing
 
14. A computer system control method performed by a primary storage system having a primary volume and a secondary storage system including a secondary volume configuring a volume pair with the primary volume, the method comprising:
performing, by the primary storage system, collective compression that is collective compression of data of a plurality of journals, wherein
the collectively compressed data and a plurality of pieces of metadata, corresponding to the collectively compressed data, are transfer targets from the primary storage system to the secondary storage system,
each of the plurality of journals is configured from journal data and journal metadata which is associated with the journal data, and
the journal data is a copy of data written in the primary volume; and
acquiring, by the secondary storage system, a plurality of pieces of journal data by decompressing one or more pieces of the collectively compressed data, and writing the plurality of pieces of journal data to the secondary volume.