Invention Grant
- Patent Title: Incremental block level backup
- Patent Title (中): 增量块级备份
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Application No.: US14684966Application Date: 2015-04-13
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Publication No.: US09558073B2Publication Date: 2017-01-31
- Inventor: Jared Cantwell , Matt Holiday
- Applicant: NETAPP, INC.
- Applicant Address: US CA Sunnyvale
- Assignee: NETAPP, INC.
- Current Assignee: NETAPP, INC.
- Current Assignee Address: US CA Sunnyvale
- Agency: Foley & Lardner LLP
- Main IPC: G06F17/30
- IPC: G06F17/30 ; G06F11/14

Abstract:
Disclosed are systems, computer-readable mediums, and methods for incremental block level backup. An initial backup of a volume is created at a backup server, where creating the initial backup includes retrieving an original metadata file from a metadata server, and retrieving a copy of all data of the volume based on the original metadata file. A first incremental backup of the volume is then created at the backup server, where creating the first incremental backup includes retrieving a first metadata file, where the first metadata file was created separately from the original metadata file. A block identifier of the first metadata file is compared to a corresponding block identifier of the original metadata file to determine a difference between the first and original block identifiers, and a copy of a changed data block of the volume is retrieved based on the comparison of the first and original block identifiers.
Public/Granted literature
- US20150220402A1 INCREMENTAL BLOCK LEVEL BACKUP Public/Granted day:2015-08-06
Information query