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1. (WO2018055686) INFORMATION PROCESSING SYSTEM

Pub. No.:    WO/2018/055686    International Application No.:    PCT/JP2016/077790
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Thu Sep 22 01:59:59 CEST 2016
IPC: G06F 12/00
Applicants: HITACHI, LTD.
株式会社日立製作所
Inventors: OHARA, Masayoshi
大原 正義
TAKEDA, Takahiko
武田 貴彦
SAKAGUCHI, Takashi
坂口 孝
KATOH, Yosuke
加藤 陽介
NARITA, Kensuke
成田 憲亮
Title: INFORMATION PROCESSING SYSTEM
Abstract:
An information processing system according to an embodiment of the present invention includes: a main system provided with a plurality of main storage devices; and a subsystem provided with a plurality of main storage devices, wherein the main storage device and the sub-storage device system each have one or more volumes and journal volumes. When receiving a write command including a time stamp, the main system creates and transmits, to the main storage device, a journal creation command including the write data and time stamp. The main storage device, which has received the journal creation command, stores the write data in the volume(s) and creates and stores, in the journal volume(s), a journal including the write data and time stamp. When acquiring a plurality of journals created by the main system, the subsystem determines, on the basis of the time stamp included in each journal, a journal that is transmittable to the sub-storage device, and creates and issues, to the sub-storage device, a journal restore command on the basis of the content of the determined journal. In addition, the sub-storage device, which has received the journal restore command, stores, in the volume included in the sub-storage device, the write data included in the journal restore command.