Patent Number: 7,788,413

Title: Method and system for handling commands requesting movement of a data storage medium between physical media libraries

Abstract: Embodiments of the present invention provide systems and methods for handling commands requesting movement of a data storage medium (magnetic tape, optical disk, or other medium) from a source media library to a destination media library using a pass through port. Prior to issuing commands requesting movement of the data storage medium from a source location to the pass through port and from the pass through port to a destination location, embodiments of the present invention can check the status of various locations (e.g., the destination location or pass through port) to determine if the movement requested in the original command can be completed successfully. Another embodiment of the present invention can maintain reservation flags for pass through ports so that the status of particular pass through ports can be determined and an available pass through port selected.

Inventors: Justiss; Steven A. (Lakeway, TX), Kramer; Alexander (Austin, TX)

Assignee: Crossroads Systems, Inc.

International Classification: G06F 3/00 (20060101); G06F 7/00 (20060101); G06F 19/00 (20060101)

Expiration Date: 8/31/12018