Emc Corporation

Benjamin Bushoy

Vitaly Rozenman

Dmitry Gritsay

Rajesh Gandhi

Venkata R Tiruveedi

Evgeny Roytman

Richard T Simon

A topology representation stores the topology in database tables corresponding to a topology schema for representing the manageable entities and relations in the SAN. A management application performs topology manipulations via database queries operable to process the database tables representing the topology, thus avoiding loading the entire topology into memory. Accordingly, configurations herein need not store the entire topology representation in order to process the topology by performing relational database queries that effectively perform the topology processing via the database query engine rather than a memory resident data structure.

Methods and apparatus for representing and querying storage area network (SAN) topology

The present disclosure is directed to a system, method, apparatus, encoded computer readable media, etc., for maintaining data. A processor function maintains a map that keeps track of which data information stored in a first repository have corresponding record information stored in a second repository. The map can be used to facilitate synchronization of the first repository and the second repository. For example, the processor function can receive a command to delete a particular managed object from the first repository. In response to receiving the command, the processor function utilizes the map to identify whether the particular managed object to be deleted from the first repository has any corresponding related records stored in the second repository. If so, the processor function provides a notification (to an information management application associated with the second repository) indicating that the corresponding related record stored in the second repository can be deleted.

Methods and apparatus for synchronizing information

A database manager maintains information (in a database) associated with each of multiple resources according to different domain models used to view the resources by corresponding topology services. Model consolidation (for the topology services) and a unique way of storing information associated with the models in the database enables the database manager to efficiently store, calculate, and retrieve topology objects from a database for multiple model-driven applications, which may have commonly defined portions of the domain models. The model consolidation solution provides flexibility and scalability in terms of defining cross-model functionality for model-driven applications. Additionally, the model consolidation solution also allows any model-driven topology service application to operate within a set of domain models derived from application needs.

Model consolidation in a database schema

A database manager utilizes a same physical database schema to store attribute information associated with each of multiple resources in a storage area network environment. For example, the database manager maintains a fixed number of (or a relatively small number of) relational database tables to store information associated with any of multiple types of storage area network resources and corresponding attributes. The database manager uses a portion of the relational database tables (e.g., a resource type table and property type table) to store metadata such as resource types and corresponding resource attribute information. The database manager uses another portion of the relational database tables (e.g., an object instance table and one or more different data tables) to store actual data associated with storage area network resources.

Universal database schema and use

Techniques herein involve anticipating the application of a command to modify objects having associated object data stored in a relational database. Prior to receipt of an object modification command that causes a modification to a respective object and/or an object hierarchy, a computer process generates a set of operational instructions to carry out the object modification command. Generally, the computer process analyzes a structure for storing object data in a relational database to identify information in the relational database that will be impacted as a result of executing a corresponding object modification command. Based on analysis of the structure, the computer process generates the set of operational instructions. The execution of the set of operational instructions to carry out the command causes the respective object and/or object hierarchy to be modified as well as causes a corresponding modification to contents of a relational database storing respective object data.

Methods and apparatus for managing contents of a database

A computer process initiates a pre-analysis of managed objects and corresponding structures for storing object data in a relational database. The pre-analysis yields a set of operational instructions (e.g., a 'stored' database procedure) that can be applied at run time to more efficiently initiate a modification to objects and corresponding object data stored in a relational database. After execution of a stored procedure to modify contents of an object and respective contents in a relational database, a synchronizer utilizes an identifier to access a log that stores changes associated with a managed object to which the stored procedure was applied. Based on contents of the log, the synchronizer identifies changes to one or more managed objects and identifies corresponding processes that rely on use of the affected managed objects. The synchronizer then notifies corresponding processes utilizing the affected managed objects of the changes to the relational database and/or managed objects.

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Newton, MA, United States of America

Benjamin Bushoy