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:
Sep. 15, 2009
Filed:
Dec. 21, 2006
Wai Lam, Jericho, NY (US);
Ronald S. Niles, Teaneck, NJ (US);
Xiaowei LI, Hauppauge, NY (US);
FalconStor, Inc., Melville, NY (US);
Abstract
In accordance with an example of an embodiment of the invention, a method for comparing a first unit of data stored in a first storage system and a second unit of data stored in a second storage system is provided. The method comprises generating a first digest that represents the first unit of data, generating an initial value associated with the first unit of data, and deriving an encoded value using the first digest and the initial value. The method further comprises transmitting the encoded value from the first storage system to the second storage system, generating a second digest that represents the second unit of data, and deriving a decoded value using the second digest to decode the encoded value. The method also comprises transmitting the decoded value from the second storage system to the first storage system, and determining whether the first unit of data and the second unit of data are duplicates of one another by comparing the decoded value and the initial value. Systems are also disclosed.