The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2009
Filed:
Jun. 14, 2004
Youichi Gotoh, Odawara, JP;
Takeshi Ido, Odawara, JP;
Katsuhiro Uchiumi, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention allows a reserved state that prevails for an LDEV as a result of a host undergoing a system shutdown or the like to be confirmed and cancelled easily. The serverreserves the LDEVand uses same exclusively. When the serverundergoes a system shutdown due to a fault or similar (S), the LDEVthen remains reserved (S). The serveris therefore unable to access the LDEV. The system administrator reads exclusive control informationin the memoryvia the management terminal, and is thus able to display the reserved states of respective LDEVs on a terminal screen and confirm these states. The user then issues an instruction to cancel a reserved state from the management terminal(S). The disk array devicereceives the cancellation instruction, and then cancels the reserved state by partially rewriting the exclusive control information