Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-10-17
2010-02-02
Peugh, Brian R (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C707S793000, C711S114000
Reexamination Certificate
active
07657720
ABSTRACT:
Provided is a storage apparatus operable to prevent incomplete backup and perform efficient backup even in systems characterized by a relatively small backup window and high degrees of utilization by users. This storage apparatus performs a snapshot of a volume storing data, using a logoff or login request at a certain point in time within in the backup window as a trigger, and creates a replication volume of the volume based on the acquired snapshot. To achieve the data consistency, when a login request is made, the storage apparatus temporarily suspends processing for establishing a session until the snapshot is created, and resumes such processing for establishing the session based on a login request after the snapshot is created. In one implementation, the replication volume is created in the background.
REFERENCES:
patent: 6694413 (2004-02-01), Mimatsu et al.
patent: 2007/0156985 (2007-07-01), Tsai et al.
patent: 2007/0300013 (2007-12-01), Kitamura
patent: 2001-306407 (2001-11-01), None
patent: 2002-297427 (2002-10-01), None
Hitachi , Ltd.
Namazi Mehdi
Peugh Brian R
Sughrue & Mion, PLLC
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