COMPUTER SYSTEM AND DATA MIGRATION METHOD

WIPO Patent Application WO/2012/117447

A1

A path is formed between a host computer and storage apparatuses without depending on the configuration of the host computer and a network and a plurality of volumes having a copy function are migrated between storage apparatuses while keeping the latest data. A computer system includes a host computer and first and second storage apparatuses, wherein the second storage apparatus virtualizes a plurality of migration source volumes as a plurality of migration destination volumes and provides them to the host computer; and if the second storage apparatus receives an input/output request for each migration destination volume, it reflects data in each migration source volume via each migration destination volume and the host computer cancels a path to each migration source volume and registers a path to each migration destination volume; and if the second storage apparatus receives a write request, it writes write data to each migration destination volume and each migration source volume and migrates copy processing control information and data until the termination of migration processing.

SAITO HIDEO (JP)
EGUCHI YOSHIAKI (JP)
YAMAMOTO MASAYUKI (JP)
YAMAMOTO AKIRA (JP)

PCT/JP2011/001217

September 07, 2012

March 02, 2011

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HITACHI LTD (JP)
SAITO HIDEO (JP)
EGUCHI YOSHIAKI (JP)
YAMAMOTO MASAYUKI (JP)
YAMAMOTO AKIRA (JP)

G06F3/06; G06F11/20

US20060085607A1	2006-04-20
US20050138308A1	2005-06-23
EP1857918A2	2007-11-21
US20070198604A1	2007-08-23
US20060005074A1	2006-01-05
JP2007115221A	2007-05-10

OHGA, Shinji et al. (3rd Floor Shiodome Building, 1-2-20, Kaigan, Minato-k, Tokyo 22, JP)

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