公开(公告)号：US20200250201A1

公开(公告)日：2020-08-06

申请号：US16853660

申请日：2020-04-20

Applicant: NetApp, Inc.

Inventor： Jared Cantwell ,  William Minckler ,  Joe Roback ,  James Philip Wittig

IPC: G06F16/27 ,  H04L29/08

Abstract: Disclosed are systems, computer-readable mediums, and methods for receiving a start replication message to replicate a source volume to a replicated volume. A source system forwards I/O requests to the replica server. A data structure associated with the replicated volume is initialized. A write request is received from the source system. The write data is written to the replicated volume and the data structure is updated. Source metadata associated with the source volume is received. The source metadata is compared with prior metadata associated with a prior point-in-time image of the source volume to determine blocks of data that have changed since the prior point-in-time image of the source volume. A first block is determined to not be retrieved based upon the data structure. A second block is determined to be retrieved based upon the data structure. The second block is received and written to the replicated volume.

公开(公告)号：US11386120B2

公开(公告)日：2022-07-12

申请号：US16853660

申请日：2020-04-20

Applicant: NetApp, Inc.

Inventor： Jared Cantwell ,  Bill Minckler ,  Joe Roback ,  Jim Wittig

IPC: G06F16/27 ,  H04L12/14 ,  H04L12/24 ,  H04L29/08 ,  G06Q30/00 ,  G06Q10/10 ,  H04L41/14 ,  H04L67/50 ,  H04L67/1095

Abstract: Disclosed are systems, computer-readable mediums, and methods for receiving a start replication message to replicate a source volume to a replicated volume. A source system forwards I/O requests to the replica server. A data structure associated with the replicated volume is initialized. A write request is received from the source system. The write data is written to the replicated volume and the data structure is updated. Source metadata associated with the source volume is received. The source metadata is compared with prior metadata associated with a prior point-in-time image of the source volume to determine blocks of data that have changed since the prior point-in-time image of the source volume. A first block is determined to not be retrieved based upon the data structure. A second block is determined to be retrieved based upon the data structure. The second block is received and written to the replicated volume.