Brian D Rasmussen

US Patent:

7472405, Dec 30, 2008

Filed:

Aug 12, 2005

Appl. No.:

11/202825

Inventors:

Steven Ned Pierce - Tucson AZ, US
Jonathan Edward Bosley - Tucson AZ, US
Brian Gerard Goodman - Tucson AZ, US
Brian Dean Rasmussen - Tucson AZ, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 7/085
G11B 17/03

US Classification:

720630, 369 3043

Abstract:

A system, apparatus, and method are disclosed for conducting an inventory of a data storage library. The invention includes providing a plurality of data storage slots for storing data storage cartridges, providing an accessor having a plurality of detectors mounted thereon, and concurrently detecting cartridge information with the plurality of detectors for a corresponding plurality of data storage slots. The detectors may include any combination of detectors, including but not limited to, bar code scanners, radio frequency readers, cartridge presence sensors, or cameras. In certain embodiments, the invention also includes associating the cartridge information with the corresponding data storage slot and storing the information on a data bearing medium.

US Patent:

20050182801, Aug 18, 2005

Filed:

Feb 13, 2004

Appl. No.:

10/779218

Inventors:

Thomas Bish - Tucson AZ, US
Brian Rasmussen - Tucson AZ, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

International Classification:

G06F012/00

US Classification:

707203000

Abstract:

Bulk synchronization reconciling maintains data volumes at the same version in redundant data storage libraries. Tokens of each library describe version-related characteristic(s) of an associated volume of data. At least one director establishes a reconcile set of tokens of the libraries describing dissimilar version-related characteristics of a same associated volume. A plurality of subsets of the reconcile set of tokens are established based on a first criteria, and allotted to directors to reconcile the data of volumes of the subsets, to split the reconciling between the directors. An example is to select subsets based on the last binary digit of the volume identifier, e.g. odd and even numbered subsets. Alternatively, the volume identifiers may be split into upper and lower halves. Further, the directors reconcile in a sequence based on a second criteria, e.g., one in numerical sequence, and another in reverse numerical sequence.