DATA PROTECTION SYSTEM OF STORAGE VOLUME

PURPOSE:To prevent inadequate access to the data set on storage volume of a storage device mount by providing definition information to protect a specified area in the storage volume from the inadequate access so as to reference the area. CONSTITUTION:A data protection control device 2 is provided w...

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Bibliographic Details
Main Author MINEO AKIRA
Format Patent
LanguageEnglish
Published 12.06.1985
Edition4
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:PURPOSE:To prevent inadequate access to the data set on storage volume of a storage device mount by providing definition information to protect a specified area in the storage volume from the inadequate access so as to reference the area. CONSTITUTION:A data protection control device 2 is provided with a function inputting definition information of a protection area when a magnetic disc volume being a storage volume is mounted and a function to check the propriety of an input/output instruction from a host computer. The data protection control device 2 consists of a mount detecting section 21, definition information input control section 22, internal memory 23 for storing protection area definition information, protection switch 24 and a protection area access discriminating control section 25. The definition information input control section 22 and the protection area access discriminating control section 25 form a kind of architecture of the program controller.
Bibliography:Application Number: JP19830215554