International Business Machines Corporation

Paul T Burton

Jaishankar Moothedath Menon

James T Brady

Steven D Gerdt

Alden B Johnson

A system for managing data storage devices of a data storage subsystem. A data storage system includes a controller coupled to multiple data storage devices. In response to a request, the controller allocates the devices' storage space into a number of storage partitions or 'virtual devices.' The request specifies the size and function mode for each storage partition. Each storage partition, having the requested size, is operated according to its requested function mode. This involves mapping access commands, which specify virtual addresses, to the proper physical addresses of the appropriate data storage devices.

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San Jose, CA, United States of America

Paul T Burton