发明授权
US07975115B2 Method and apparatus for separating snapshot preserved and write data
有权
用于分离快照保留和写入数据的方法和装置
- 专利标题： Method and apparatus for separating snapshot preserved and write data
- 专利标题（中）： 用于分离快照保留和写入数据的方法和装置
-
申请号： US11779965申请日： 2007-07-19
-
公开(公告)号： US07975115B2公开(公告)日： 2011-07-05
- 发明人: James George Wayda , Kent Lee , Ngoclan Thi Vu , Elizabeth G. Rodriguez
- 申请人： James George Wayda , Kent Lee , Ngoclan Thi Vu , Elizabeth G. Rodriguez
- 申请人地址： US CO Longmont
- 专利权人： Dot Hill Systems Corporation
- 当前专利权人： Dot Hill Systems Corporation
- 当前专利权人地址： US CO Longmont
- 代理商 Thomas J. Lavan; Matthew R. Ellsworth
- 主分类号： G06F12/16
- IPC分类号： G06F12/16
摘要：
A method and device for managing snapshot data is provided. Snapshots may be created having a preserved data area and a write data area. The preserved data area is used to maintain snapshot data corresponding to the point-in-time when the snapshot was created while the write data area is used to facilitate host read/write access to the snapshot. By maintaining two separate areas, the snapshot can be written to without altering the point-in-time representation of the snapshot.