Hewlett-packard Development Company, L.P.

Joseph Algieri

Robert Alan Cochran

David A Robinson

John Wilkes

A mirroring device includes an interface capable of coupling a primary storage array and a secondary storage array to a network. The interface further includes a logic that monitors traffic for a network packet destined for the primary storage array and selectively identifies a storage array write operation and associated data in the network packet, constructs a network packet targeted to the secondary storage array, and transmits the packet to the primary storage array and the secondary storage array.

Mirroring storage interface

A database system is capable of executing a database application that transfers a logical object in multiple fragments. The database system comprises a main storage site, a remote storage site, a main protocol executable on the main storage site, and a remote protocol executable on the remote storage site. The remote storage site is capable of linking to the main storage site and mirroring information stored in the main storage site. The remote storage site includes a storage and a cache sidefile divided into a plurality of array sidefile recordsets. The main protocol is capable of including information indicative of logical object fragment commencement and completion in the multiple fragment database application transfer. The remote protocol is capable of controlling the cache sidefile to cache the multiple fragments as received and to enable destaging of the logical object to the storage on receipt of all fragments.

System for preserving logical object integrity within a remote mirror cache

A technique and user interface for the assignment of computer system resources and, particularly, for the assignment of storage system resources. The invention allows a user to make design selections through a user interface and, then, automatically provides an indication to the user as the effect of the selections. For example, various performance parameters for each of several applications may be displayed graphically as a chart. In response to the user adjusting a parameter for one application, the invention determines what effect this change will have on the other displayed parameters. A design for the computer system is developed. Levels of performance parameters for the design are predicted. The predicted levels of performance parameters are compared to the desired levels of performance parameters. When the predicted levels are lower than the desired levels, the design is modified. The design may be modified by reducing the desired levels of performance parameters based on utility functions. The results may then be displayed graphically on the chart. The invention is particularly useful for allocating data storage system resources among several different applications.

Growing community of inventors

Santa Clara, CA, United States of America

Joseph Algieri