Invention Grant
- Patent Title: Managing dereferenced chunks in a deduplication system
- Patent Title (中): 在重复数据删除系统中管理取消引用的块
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Application No.: US13477908Application Date: 2012-05-22
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Publication No.: US08775390B2Publication Date: 2014-07-08
- Inventor: Matthew J. Anglin , David M. Cannon , Colin S. Dawson , Robert S. Elder
- Applicant: Matthew J. Anglin , David M. Cannon , Colin S. Dawson , Robert S. Elder
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Konrad, Raynes, Davda and Victor LLP
- Agent David W. Victor
- Main IPC: G06F17/00
- IPC: G06F17/00 ; G06F17/30
Abstract:
A chunk index has information on chunks in a storage space referenced in objects in the storage space. The chunk index includes a reference count for each chunk indicating a number of objects in which the chunk is referenced and a reference measurement representing a level of data object references to the chunk. One chunk is selected to remove from the storage space based on a criteria applied to the reference measurements of chunks having reference counts indicating that the chunks are not referenced in one object in the storage space.
Public/Granted literature
- US20130054545A1 MANAGING DEREFERENCED CHUNKS IN A DEDUPLICATION SYSTEM Public/Granted day:2013-02-28
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