公开(公告)号：US09547456B2

公开(公告)日：2017-01-17

申请号：US14211546

申请日：2014-03-14

申请人： EMC Corporation

发明人： Lei Wang ,  Xiangqing Yang ,  Ren Ren ,  Xi Ma ,  Yin Zhu

IPC分类号： G06F13/12 ,  G06F3/06 ,  G06F12/16

CPC分类号： G06F3/065 ,  G06F3/061 ,  G06F3/0689 ,  G06F12/16

摘要： Various embodiments of the present invention relate to a method and apparatus for data copy. Specifically, in one embodiment of the present invention there is provided a method for data copy, comprising: obtaining a data source on which data copy is to be executed; determining a size P of a block extent based on which the data source is divided; dividing the data source into at least one data block based on the size P of the block extent; and copying data from the data source to a data target in the basic unit of the at least one data block; wherein the size P of the block extent is an integral multiple of a size R of a read/write unit supported by underlying architecture. In one embodiment of the present invention, there is provided an apparatus for data copy.

摘要翻译： 本发明的各种实施例涉及用于数据复制的方法和装置。 具体地，在本发明的一个实施例中，提供了一种用于数据复制的方法，包括：获得要在其上执行数据复制的数据源; 确定数据源被划分的块大小的大小P; 基于块扩展的大小P将数据源划分成至少一个数据块; 以及将所述数据源中的数据复制到所述至少一个数据块的基本单元中的数据目标; 其中块扩展块的大小P是由底层架构支持的读/写单元的大小R的整数倍。 在本发明的一个实施例中，提供了一种用于数据复制的装置。

公开(公告)号：US09619173B1

公开(公告)日：2017-04-11

申请号：US14493616

申请日：2014-09-23

申请人： EMC Corporation

发明人： Ren Ren ,  Oliver (DS SH) Yang ,  Xi Ma ,  Walter Wang ,  Shay Harel

IPC分类号： G06F3/06

CPC分类号： G06F3/065 ,  G06F3/061 ,  G06F3/0689

摘要： Described are techniques for updating checkpoint data during a copy process that copies data from a first device to a second device. A portion of data is copied from the first device to the second device. A first calculated value is determined in accordance with a plurality of factors. In accordance with the first calculated value and a threshold ratio, it is determined whether to update the checkpoint data denoting progress of the copying process that copies data from the first device to the second device. If it is determined to update the checkpoint data, first processing is performed that updates the checkpoint data.

公开(公告)号：US20140281221A1

公开(公告)日：2014-09-18

申请号：US14211546

申请日：2014-03-14

申请人： EMC Corporation

发明人： Lei Wang ,  Xiangqing Yang ,  Ren Ren ,  Xi Ma ,  Yin Zhu

IPC分类号： G06F3/06

CPC分类号： G06F3/065 ,  G06F3/061 ,  G06F3/0689 ,  G06F12/16

摘要： Various embodiments of the present invention relate to a method and apparatus for data copy. Specifically, in one embodiment of the present invention there is provided a method for data copy, comprising: obtaining a data source on which data copy is to be executed; determining a size P of a block extent based on which the data source is divided; dividing the data source into at least one data block based on the size P of the block extent; and copying data from the data source to a data target in the basic unit of the at least one data block; wherein the size P of the block extent is an integral multiple of a size R of a read/write unit supported by underlying architecture. In one embodiment of the present invention, there is provided an apparatus for data copy.

摘要翻译： 本发明的各种实施例涉及用于数据复制的方法和装置。 具体地，在本发明的一个实施例中，提供了一种用于数据复制的方法，包括：获得要在其上执行数据复制的数据源; 确定数据源被划分的块大小的大小P; 基于块扩展的大小P将数据源划分成至少一个数据块; 以及将所述数据源中的数据复制到所述至少一个数据块的基本单元中的数据目标; 其中块扩展块的大小P是由底层架构支持的读/写单元的大小R的整数倍。 在本发明的一个实施例中，提供了一种用于数据复制的装置。