Invention Grant
US09015552B2 Data deduplication using CRC-seed differentiation between data and stubs
有权
使用数据和存根之间的CRC种子差异进行重复数据删除
- Patent Title: Data deduplication using CRC-seed differentiation between data and stubs
- Patent Title (中): 使用数据和存根之间的CRC种子差异进行重复数据删除
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Application No.: US13894016Application Date: 2013-05-14
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Publication No.: US09015552B2Publication Date: 2015-04-21
- Inventor: Allen K. Bates , Nils Haustein , Craig A. Klein , Frank Krick , Ulf Troppens , Daniel J. Winarski
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Griffiths & Seaton PLLC
- Main IPC: H03M13/00
- IPC: H03M13/00 ; G06F13/00 ; G06F17/00 ; G06F17/30 ; G06F11/10 ; H03M13/09
Abstract:
Various embodiments for differentiating between data and stubs pointing to a parent copy of deduplicated data are provided. Undeduplicated data is stored with a checksum of an initial value as a first cyclic redundancy check (CRC) seed. A stub pointing to the parent copy of the deduplicated data is stored with an additional checksum of a differing, additional initial value as a second CRC seed.
Public/Granted literature
- US20130262422A1 DATA DEDUPLICATION USING CRC-SEED DIFFERENTIATION BETWEEN DATA AND STUBS Public/Granted day:2013-10-03
Information query
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