公开(公告)号：WO2008005211A3

公开(公告)日：2008-06-19

申请号：PCT/US2007014664

申请日：2007-06-25

Applicant: NETWORK APPLIANCE INC

Inventor： ZHENG LING ,  FONG YINFUNG

IPC: G06F17/00

CPC classification number: G06F17/30159 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/0689

Abstract: A system and method for calculating and storing block fingerprints for data dedu- plication. A fingerprint extraction layer generates a fingerprint of a predefined size, e.g., 64 bits, for each data block stored by a storage system. Each fingerprint is stored in a fingerprint record, and the fingerprint records are, in turn, stored in a fingerprint database for access by the data deduplication module. The data deduplication module may peri¬ odically compare the fingerprints to identify duplicate fingerprints, which, in turn, indi¬ cate duplicate data blocks.

Abstract translation: 用于计算和存储用于数据删除的块指纹的系统和方法。 指纹提取层为存储系统存储的每个数据块产生预定义大小的指纹，例如64位。 每个指纹存储在指纹记录中，并且指纹记录又存储在指纹数据库中以供重复数据删除模块访问。 重复数据删除模块可以周期性地比较指纹以识别重复的指纹，其又指示重复的数据块。