International Business Machines Corporation

Tram Thi Nguyen

Thao Bich Bui

Christina Hien Tran

Richard Albert Welp

Jaishankar Moothedath Menon

Shaun E Harrington

Emmanuel Barajas Gonzalez

William Russell Belknap

Chan Y Ng

Gerald Edward Kozina

Steven K Elliot

Joe-Ming Cheng

Lawrence John Garibay

Robert Bruce Brodie

Various embodiments for management of object-based storage by a processor. A relationship-based analysis of attributes of an object in the storage is performed. A repository of the attributes is maintained, and a modification to the object insofar as any of the attributes change, is tracked. An object-based storage architecture is organized for the object using the attributes and their relationships.

Optimization of object-based storage

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

A device adapter maintains a device polling table in memory that can be dynamically changed in response to disk drive device failures and is updated with each poll so that failed devices can be quickly deleted from the table and alternate device polling mapping can be achieved. A system reconfiguration is not necessary to implement the modifications to the system processing. The device adapter is capable of a greater variety of processing tasks than is conventional, including determining cylinder head position and copying data that otherwise would be performed by a control unit.

Method and apparatus for polling and selecting any paired device in any

A constant size storage can be managed to preserve locality of referencing where it is partitioned into linear addressable storage space for compressed symbol strings and a linked list addressable space for overflowing portions of each compressed string, a token to the overflow being embedded in the linear address. The linear space is readjusted periodically in a direction so as to maintain the amount of available overflow within to lie within a certain range of current usage. Changes in compression statistics result in changing overflow usage requiring readjustment to minimize internal fragmentation etc.

Method and means for managing linear mapped address spaces storing

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San Jose, CA, United States of America

Tram Thi Nguyen