Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2005-11-09
2010-02-23
Mahmoudi, Tony (Department: 2169)
Data processing: database and file management or data structures
Database design
Data structure types
C709S221000
Reexamination Certificate
active
07668882
ABSTRACT:
In a cluster type NAS, it is necessary to copy file data between disk devices of servers upon migration of a file system or a part of the file system. A server includes a control table for managing a file system or a part of the file system, and a mapping table for managing a relation between a logical device of a disk subsystem and a logical unit recognized by a server, and in response to an instruction to execute migration of the file system from a first server to a second server, the mapping table is referenced to send an instruction to update the relation between the logical device and the logical unit to the second server, and the second server newly recognizes a logical unit and updates a management server identifier of the control table.
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Kataoka Kenji
Nakatani Yoji
Sonoda Koji
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Mahmoudi Tony
Uddin Md. I
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