The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2014
Filed:
Jan. 25, 2010
Ralph T. Beeston, Tucson, AZ (US);
Erika M. Dawson, Tucson, AZ (US);
Duke A. Lee, Tucson, AZ (US);
David Luciani, Tucson, AZ (US);
Joel K. Lyman, Tucson, AZ (US);
Ralph T. Beeston, Tucson, AZ (US);
Erika M. Dawson, Tucson, AZ (US);
Duke A. Lee, Tucson, AZ (US);
David Luciani, Tucson, AZ (US);
Joel K. Lyman, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
According to one embodiment, a system includes a virtual tape library having a cache, a virtual tape controller (VTC) coupled to the virtual tape library, and an interface for coupling at least one host to the VTC. The cache is shared by all the hosts, and a common view of a cache state, a virtual library state, and a number of write requests pending is provided to all the hosts by the VTC.