Invention Grant
US07991973B2 Data storage systems, methods and networks having a snapshot efficient block map
有权
数据存储系统，方法和网络具有快照高效的块映射
- Patent Title: Data storage systems, methods and networks having a snapshot efficient block map
- Patent Title (中): 数据存储系统，方法和网络具有快照高效的块映射
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Application No.: US12149583Application Date: 2008-05-05
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Publication No.: US07991973B2Publication Date: 2011-08-02
- Inventor: Joel Jacobson , Garth Gibson
- Applicant: Joel Jacobson , Garth Gibson
- Applicant Address: US PA Pittsburgh
- Assignee: Panasas, Inc.
- Current Assignee: Panasas, Inc.
- Current Assignee Address: US PA Pittsburgh
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: G06F12/02
- IPC: G06F12/02
Abstract:
A data storage system includes a storage device divided into a plurality of blocks for storing data for a plurality of volumes, and a processor to execute instructions for maintaining a block map corresponding to the data stored on the storage device. The storage system may be part of a storage system network. The block map stores reference data indicating which of the volumes reference which blocks on the storage device, and which blocks on the storage device are unallocated. The reference data may include, for groups of one or more blocks, a first value identifying the oldest volume in which the group of blocks was allocated and a second value identifying the newest volume in which the group of blocks was allocated. The volumes may include one or more snapshots.
Public/Granted literature
- US20090276593A1 Data storage systems, methods and networks having a snapshot efficient block map Public/Granted day:2009-11-05
Information query
