Storage system and method of taking over logical unit in...

Details Storage system and method of taking over logical unit in... Storage system and method of taking over logical unit in...

2011-04-26

2011-04-26

Ellis, Kevin L (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S112000, C711S161000, C711S173000

Reexamination Certificate

active

07934068

ABSTRACT:
A storage apparatus includes a drive unit in which a logical unit is formed, and a controller unit for accessing the logical unit by controlling the drive unit according to an access request sent from a host apparatus. The storage apparatus issues a logical unit takeover request to the other storage apparatuses, allocates a logical unit of another storage apparatus that will accept the transfer of the logical volume to its own logical unit according to a takeover approval sent from other storage apparatuses in response to the takeover request, and thereafter migrates data of the own logical unit to a logical unit of another storage apparatus. Subsequently, the path is switched so that the access request from the host apparatus is given to one of the other storage apparatuses.

REFERENCES:
patent: 2003/0056058 (2003-03-01), Veitch
patent: 2004/0049553 (2004-03-01), Iwamura et al.
patent: 2005/0283569 (2005-12-01), Mizuno et al.
patent: 2006/0206675 (2006-09-01), Sato et al.
patent: 2006/0248273 (2006-11-01), Jernigan et al.
patent: 2006/0248302 (2006-11-01), Yamamoto et al.
patent: 2007/0245110 (2007-10-01), Shibayama et al.
patent: 2008/0005288 (2008-01-01), Kodama et al.
patent: 2008/0005612 (2008-01-01), Arai
patent: 10 2005 013502 (2006-09-01), None
patent: 1 170 657 (2002-01-01), None
patent: 1 396 789 (2004-03-01), None
patent: 1 873 644 (2008-01-01), None
patent: 2004-102374 (2004-04-01), None
patent: 2004-220450 (2004-08-01), None
patent: 2008-9707 (2008-01-01), None
patent: 2008-9767 (2008-01-01), None

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