公开(公告)号：US20180173732A1

公开(公告)日：2018-06-21

申请号：US15846370

申请日：2017-12-19

申请人： EMC IP Holding Company LLC

发明人： James Fei Wu ,  Colin Zou ,  Lin Xiao ,  Sean Cheng Ye ,  Peng Wu

IPC分类号： G06F17/30

CPC分类号： G06F16/215 ,  G06F11/1453 ,  G06F11/1464 ,  G06F16/1748 ,  G06F16/2365

摘要： Embodiments of the present disclosure disclose methods and devices of data de-duplication. The method of data de-duplication performed at a client comprises: in response to receiving data to be backed up at a client, sampling the data to be backed up to obtain the sampled data; generating a signature for the sampled data; transmitting the signature to a master storage node in a storage cluster including a plurality of storage nodes, to allow the master storage node to select one storage node from the plurality of storage nodes; receiving an indication of the selected storage node from the master storage node; and transmitting, based on the indication, the data to be backed up to the selected storage node. Embodiments of the present disclosure also provide methods of data de-duplication performed at the master storage node and the slave storage node, and corresponding devices.

公开(公告)号：US10936560B2

公开(公告)日：2021-03-02

申请号：US15846370

申请日：2017-12-19

申请人： EMC IP Holding Company LLC

发明人： James Fei Wu ,  Colin Zou ,  Lin Xiao ,  Sean Cheng Ye ,  Peng Wu

IPC分类号： G06F16/215 ,  G06F16/23 ,  G06F16/174 ,  G06F11/14

摘要： Embodiments of the present disclosure disclose methods and devices of data de-duplication. The method of data de-duplication performed at a client comprises: in response to receiving data to be backed up at a client, sampling the data to be backed up to obtain the sampled data; generating a signature for the sampled data; transmitting the signature to a master storage node in a storage cluster including a plurality of storage nodes, to allow the master storage node to select one storage node from the plurality of storage nodes; receiving an indication of the selected storage node from the master storage node; and transmitting, based on the indication, the data to be backed up to the selected storage node. Embodiments of the present disclosure also provide methods of data de-duplication performed at the master storage node and the slave storage node, and corresponding devices.