Central computer backup system utilizing localized data bases
First Claim
1. Information backup apparatus for a primary data base stored in a primary storage system comprisinga plurality of storage means each containing a secondary data base,means, connected to said plurality of storage means, for accessing each said secondary data base, andmeans, connected to said means for accessing and the primary storage system, for responding to input information provided by a direct user of the primary data base, for extracting data from the primary data base in response to said user input, for processing and storing data related to said extracted data in predetermined groups in the primary storage system, and for periodically distributing said predetermined groups of data to predetermined ones of said storage means to update each said secondary data base with corresponding data from said predetermined groups.
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Accused Products
Abstract
A distributed information backup system is disclosed. The inventive backup system includes a first computer which accesses data from a central data base and periodically distributes the data to a predetermined multiplicity of other computers upon request therefrom. Each of the other computers receives only a portion of the distributed data and thereupon updates a local data base with the data each receives. When the central data base is inaccessible, a data base user accesses one of the local data bases through one of the multiplicity of computers to obtain the data which it would ordinarily obtain from the central data base to perform his tasks.
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Citations
12 Claims
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1. Information backup apparatus for a primary data base stored in a primary storage system comprising
a plurality of storage means each containing a secondary data base, means, connected to said plurality of storage means, for accessing each said secondary data base, and means, connected to said means for accessing and the primary storage system, for responding to input information provided by a direct user of the primary data base, for extracting data from the primary data base in response to said user input, for processing and storing data related to said extracted data in predetermined groups in the primary storage system, and for periodically distributing said predetermined groups of data to predetermined ones of said storage means to update each said secondary data base with corresponding data from said predetermined groups.
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8. A method of information backup for a data base which comprises the steps of:
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in response to information supplied by a direct user of the data base, accessing the data base when predetermined data is added thereto by the user to retrieve other predetermined data, processing and storing the predetermined data and the other predetermined data in predetermined groups of data into the data base, periodically transmitting the predetermined groups of data to predetermined ones of a multiplicity of means for updating local data bases with data from the predetermined groups, and updating the local data bases with the predetermined groups of data. - View Dependent Claims (9, 10)
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11. An arrangement for providing information back up for a centralized data base having stored therein data related to a remote location comprising
a storage device at the remote location containing a local data base, said local data base comprising some but not all of the data in said centralized data base, a plurality of terminal equipments, a local area network connected to said terminal equipments, means, connected to said local area network and said storage device, for accessing said local data base, and means, connected to said local area network and said centralized data base, for periodically distributing a predetermined group of said data from said centralized data base to said means for accessing to update said local data base with said data from said predetermined group, said distributing means including a centralized computer connected to a storage device containing said centralized data base and communication means for interconnecting said local area network and said centralized computer, wherein each of said terminal equipments may access said local data base through said local area network.
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12. A method of information back up for a central computer system including a central storage device for storing a a cebtrakuzed data base having sloted therein data related to a remote location comprising the steps of
accessing the system to obtain a subset of data from the centralized data base, processing said subset in the system to produce a predetermined group of data, and storing said predetermined group in the centralized data base, periodically transmitting said predetermined group of data from said central system to a local system at the remote location, and updating in said local system a local data base with said predetermined group, said local data base being smaller than the centralized data base.
Specification