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:
Feb. 28, 2006
Filed:
Oct. 18, 2002
James D. Zelenka, Pittsburgh, PA (US);
James D. Zelenka, Pittsburgh, PA (US);
Panasas, Inc., Pittsburgh, PA (US);
Abstract
A data storage methodology wherein a hashing algorithm is applied to break a directory object experiencing frequent concurrent accesses from a number of client or manager applications into a predetermined number of hash component objects and a hash master object that manages the component objects. The hash master object and the hash components, together, constitute a hash directory, which replaces the original non-hashed directory object. Each hash component object contains a portion of the entries contained in the original directory object. Each hash component is managed by only one file manager. The entries in the original directory object are distributed among the hash component objects using a predefined hashing algorithm. The creation of hash components and the hash master allows more than one client application or file manager to concurrently write corresponding hash components without the need for access coordination on each access.