VOLUME SHARING METHOD AND STORAGE SYSTEM USING THE SAME

WIPO Patent Application WO/2013/042160

A1

Since only one golden image (GI) of a snapshot can exist and is shared among a plurality of storage apparatuses, there was a problem that migration or copy thereof deteriorates the capacity efficiency and increases the cost for managing consistency. The present invention solves the above-mentioned problem by either (1) a direct sharing method of generating a parent-child relationship of snapshots among different storage apparatuses at the time of creating differential LUs from the GI or (2) a virtual sharing method of creating virtual LUs of the GI in the respective storage apparatuses and creating differential LUs of the snapshots from the created virtual LUs, using a storage virtualization function among a plurality of storage apparatuses.

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TANAKA TORU (JP)
NAKAJIMA NORIKO (JP)
KANEDA YASUNORI (JP)

PCT/JP2011/005281

March 28, 2013

September 20, 2011

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HITACHI LTD (JP)
TANAKA TORU (JP)
NAKAJIMA NORIKO (JP)
KANEDA YASUNORI (JP)

G06F3/06

US20100250878A1	2010-09-30
US7865677B1	2011-01-04
US6594744B1	2003-07-15
US20090210875A1	2009-08-20
US20070073783A1	2007-03-29
US6857001B2	2005-02-15
JP2008040571A	2008-02-21
US20080034005A1	2008-02-07

PATENT CORPORATE BODY DAI-ICHI KOKUSAI TOKKYO JIMUSHO (10-5 Shiba 4-chome, Minato-k, Tokyo 14, JP)

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