International Business Machines Corporation

Gerald Edward Kozina

William Russell Belknap

George Francis Silva

Mang-Rong Ho

Tram Thi Mai Nguyen

Masoud Madani

Kenneth Carlin Nelson

Tawei Hu

Steven K Elliot

Thomas S Lee

Mayank Vipin Shah

Lynda Arnold Hansen

Yong Li

Yongliang Li

Alan T Yaung

Ning Chen

Thomas G Burket

John T Zientara

Seifu Ali

Jian J Xu

Hui-I Hsiao

David Mun-Hien Choy

Karen Wolfe Brannon

Kwai Hing Man

Lily Liang

Shirley S Wang

Edward Joseph Gallagher

Donald Edward Benson

Tram Thi Nguyen

Chenhuei J Chiang

Donald Allan Weil

Matthew Laue

Steven Soria, Jr

Gerald R Clarke

Deb Sudipta

Geroge Francis Silva

Methods and apparatus, including computer program products, implementing and using techniques for data replication in a cluster. In response to identifying data to replicate in a multi-node system by a first node in a cluster, the data is written concurrently to other nodes in the cluster based on a rule set in a repository. In response to detecting a criterion described in the rule set, an action is performed.

Synchronous data replication in a content management system

Provided are techniques for movement readiness checking. It is determined whether each content object in a set of content objects is ready for movement. For each content object in the set of content objects that is determined to be ready for movement, an associated movement readiness indicator is set to indicate that the content object is ready to be moved. Then, each content object in the set of content objects is moved that has the associated movement readiness indicator set to indicate that the content object is ready to be moved.

Readiness checker for content object movement

A controller receives a request from a user to store content in a target node of a plurality of nodes. A determination is made of a preferred node for the user, from a repository that maintains a correspondence between the user and the preferred node for storing the content for the user, wherein the preferred node is included in the plurality of nodes. Responsive to determining from that the determined preferred node is the target node, the controller transmits the request from the user to store the content, to the preferred node. Responsive to determining that the determined preferred node is not the target node, the controller transmits the request and an identification of the target node to the preferred node.

Method, system, and computer program product to update content on networked cache servers

In a content management system having a plurality of resource managers storing objects, a replica resource manager stores a replica of an object stored in one of the plurality of resource managers. A library server contains a resource manager table that defines the plurality of resource managers and includes availability information for each of those resource managers. When a client requests an object, the library server identifies a primary resource manager storing the object. The library server also determines a replica resource manager storing a replica of the object and returns information identifying that replica resource manager if the resource manager table indicates that the primary resource manager is unavailable and indicates that the replica resource manager is online and available. The client then retrieves the replica object without incurring a timeout delay waiting for the primary resource manager to respond to an access request.

Fail over resource manager access in a content management system

A method, system, and storage medium for providing versioning of data by associating a version number having a value with a data item, establishing a table for storing a most recent version of the data item, establishing a second table for storing all versions of the data item other than the most recent version, storing the current version of the data item in the first table, storing all other versions of the data item in the second table, and determining the version of said database data item based on the version number and storage location of the database data item.

Implementing versioning support for data using a two-table approach that maximizes database efficiency

A resource manager () of a content management system () is configured to receive a client request () pertaining to information and to access at least one of a plurality of data servers () to execute the client request (). An encryption engine () encrypts passwords associated with the plurality of data servers () using a key-based encryption algorithm and stores a ciphertext corresponding to each password in a passwords storage (). A server identifier module () identifies a ciphertext in the passwords storage () that is associated with the at least one of a plurality of data servers (). A decryption engine () decrypts the ciphertext using a key-based decryption algorithm corresponding to the key-based encryption algorithm.

Password security utility

A system and method in accordance with the present invention provides for replication in a content management system. Replication is provided by utilizing the library server to track the objects to be replicated within the system. The replication is accomplished by adding two tables to the library server, a copies table and replicate table. The copies tables includes three new parts flags. A first flag identifies an ending as a copied part. A second flag identifies that other copies of this part exist. Finally a third flag identifies that a part is not yet available.

Method and system for object replication in a content management system

The present invention is directed to a multimedia data storage system for storing multimedia data including a media server which stores media data on a short-term basis, and a media archive which stores media data on a long-term basis relative to the media server. The media archive is connected to the media server, which operates as a cache device for the media archive, for transmission of media data between the media archive and the media server. According to the present invention, a volume of the media data stored in the media server is controlled based on user-defined parameters. The present invention is also directed to a method of managing a media server as a cache device for a media archive within a multimedia data storage system. The media server stores media data on a short-term basis, whereas the media archive stores media data on a long-term basis relative to the media server. The media archive is connected to the media server for transmission of media data therebetween. According to the present invention, the method of managing includes determining a volume of the media data stored in the media server and controlling the volume of the media data stored in the media server based on user-defined parameters. The present invention is also directed to a computer-readable medium of instructions to be implemented in a multimedia data storage system including a media server and a media archive. The media server stores media data on a short-term basis and the media archive stores media data on a long-term basis relative to the media server. The media archive is connected to the media server for transmission of media data therebetween. The inventive computer-readable medium of instructions includes means for determining a volume of the media data stored in the media server and means for controlling the volume of the media data stored in the media server based on user-defined parameters.

Multimedia data storage system and method for operating a media server as a cache device and controlling a volume of data in the media server based on user-defined parameters

Managing a content management system. The content management system is one that is configured and controlled to establish a connection between a client and a library server, generate a transaction identifier and insert, a record for the transaction in a tracking table associated with the library server, pass transaction data from the client to a resource manager, process the transaction at the resource manager and record transaction data in a tracking table associated with the resource manager. The resource manager returns transaction success/failure data to the client, compares activity recorded in the tracking tables, and takes corrective action based upon the activity comparison.

Method, system, and program product for transaction management in a distributed content management application

According to the present invention, a media manager is provided which incorporates an application program interface (API) for converting high-level generic commands into device-level commands for output to a media device. The inventive media manager includes a high-level command processor which decodes the high-level generic commands and device-specific code mapping modules which convert the high-level generic commands decoded by the high-level command processor into device-level commands. Each of the device-level commands is output from one of the device-specific code-mapping modules to a corresponding one of the media devices. The present invention also encompasses a method of implementing an application program interface (API) for media devices. The method includes receiving high-level generic commands from a computer application, converting the high-level generic commands into device-level commands, and outputting each of the device-level commands to one of the media devices. The present invention also encompasses a computer program product including a computer-readable medium. The computer program product includes means for decoding high-level generic commands, means for converting the high-level generic commands into device-level commands, and means for outputting each of the device-level commands to a corresponding one of the media devices. The present invention further encompasses a common application program interface (API) which converts high-level generic commands received from a computer application into device-level commands which are output to a plurality of media devices including media servers which stores media objects. The common API includes a plurality of individual APIs which each perform a specific function.

Application interface to a media server and a method of implementing the same

The present invention is directed to a multimedia data storage system for storing multimedia data including a media server which stores media data on a short-term basis, and a media archive which stores media data on a long-term basis relative to the media server. The media archive is connected to the media server, which operates as a cache device for the media archive, for transmission of media data between the media archive and the media server. According to the present invention, a volume of the media data stored in the media server is controlled based on user-defined parameters. The present invention is also directed to a method of managing a media server as a cache device for a media archive within a multimedia data storage system. The media server stores media data on a short-term basis, whereas the media archive stores media data on a long-term basis relative to the media server. The media archive is connected to the media server for transmission of media data therebetween. According to the present invention, the method of managing includes determining a volume of the media data stored in the media server and controlling the volume of the media data stored in the media server based on user-defined parameters. The present invention is also directed to a computer-readable medium of instructions to be implemented in a multimedia data storage system including a media server and a media archive. The media server stores media data on a short-term basis and the media archive stores media data on a long-term basis relative to the media server. The media archive is connected to the media server for transmission of media data therebetween.

Multimedia data storage system and method for operating a media server

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Cupertino, CA, United States of America

Gerald Edward Kozina