Invention Grant
US08904129B2 Method and apparatus for backup and restore in a dynamic chunk allocation storage system
有权
在动态块分配存储系统中备份和恢复的方法和装置
- Patent Title: Method and apparatus for backup and restore in a dynamic chunk allocation storage system
- Patent Title (中): 在动态块分配存储系统中备份和恢复的方法和装置
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Application No.: US13347040Application Date: 2012-01-10
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Publication No.: US08904129B2Publication Date: 2014-12-02
- Inventor: Yasunori Kaneda , Junichi Hara , Akira Yamamoto
- Applicant: Yasunori Kaneda , Junichi Hara , Akira Yamamoto
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F11/14
Abstract:
Backup and restore operations are made possible in a storage system that has dynamic chunk allocation (DCA) capability. In a DCA storage system, a chunk of physical storage area is not allocated to a segment of a volume until a write command is received targeting the segment of the volume. During a restore operation of the volume in the DCA storage system, the wasting of storage capacity when a backup image of the volume is restored is mitigated by preventing allocation of physical storage areas to segments of restore data that are only void data.
Public/Granted literature
- US20120117345A1 METHOD AND APPARATUS FOR BACKUP AND RESTORE IN A DYNAMIC CHUNK ALLOCATION STORAGE SYSTEM Public/Granted day:2012-05-10
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