Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-11-20
2007-11-20
Kim, Hong (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S162000, C711S165000, C711S111000, C711S203000, C714S006130, C714S006130
Reexamination Certificate
active
11167433
ABSTRACT:
Related plural logical volumes can be used after switching over from the host computer therein. A switching command, which a host computer sends, makes a storage device search for a switching target volume, from the volume tables, that is identical to identification information of the switching target volume received among switching target candidate volumes that form a volume pair relation with the switching source volume. The storage device memorizes an intra-host ID of the switching target volume and an intra-storage ID of the switching target volume in a switching table with a correspondence there between. The storage device acquires the intra-storage ID of the switching target volume in reference to the switching table in the case of receiving an access request, such that the intra-host ID of the switching source volume is used as a key, and executes switching to access to the switching target volume.
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Hosouchi Masaaki
Ikegaya Naoko
Maki Nobuhiro
Oyamada Kenichi
Hitachi , Ltd.
Kim Hong
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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