公开(公告)号：US20200265018A1

公开(公告)日：2020-08-20

申请号：US16868671

申请日：2020-05-07

Applicant: NetApp Inc.

Inventor： Ching-Yuk Paul Ngan ,  Kanwaldeep Singh ,  Yuedong Mu ,  Manoj Kumar V Sundararajan

IPC: G06F16/178 ,  G06F11/20 ,  G06F11/14

Abstract: One or more techniques and/or computing devices are provided for data synchronization. For example, an in-flight log may be maintained to track storage operations that are received by a first storage node, but have not been committed to both first storage of the first storage node and second storage of a second storage node that has a replication relationship, such as a disaster recovery relationship, with the first storage node. A dirty region log may be maintained to track regions within the first storage that have been modified by storage operations that have not been replicated to the second storage. Accordingly, a catchup synchronization phase (e.g., asynchronous replication by a resync scanner) may be performed to replicate storage operations (e.g., replicate data within dirty regions of the first storage that were modified by such storage operations) to the second storage until the first storage and the second storage are synchronized.

公开(公告)号：US20170139787A1

公开(公告)日：2017-05-18

申请号：US15368610

申请日：2016-12-04

Applicant: NetApp Inc.

Inventor： Kanwaldeep Singh ,  Austin Diec ,  Manoj Sundararajan

IPC: G06F11/16 ,  G06F11/14 ,  H04L1/08 ,  G06F3/06

CPC classification number: G06F11/1612 ,  G06F3/0604 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/067 ,  G06F11/1451 ,  G06F11/1464 ,  G06F11/1471 ,  H04L1/08

Abstract: Methods and systems for tracking information that is transferred from a source to a destination storage system are provided. The source storage system maintains a first data structure for indicating that a storage block has been transferred. The destination storage system receives the storage block and updates a second data structure to indicate that the storage block has been received. The first data structure and the second data structure are compared to determine that the storage block was successfully transferred from the source storage system and received by the destination storage system.

公开(公告)号：US10684994B2

公开(公告)日：2020-06-16

申请号：US14865442

申请日：2015-09-25

Applicant: NetApp Inc.

Inventor： Ching-Yuk Paul Ngan ,  Kanwaldeep Singh ,  Yuedong Mu ,  Manoj Kumar V Sundararajan

IPC: G06F16/00 ,  G06F16/178 ,  G06F11/14 ,  G06F11/20

Abstract: One or more techniques and/or computing devices are provided for data synchronization. For example, an in-flight log may be maintained to track storage operations that are received by a first storage node, but have not been committed to both first storage of the first storage node and second storage of a second storage node that has a replication relationship, such as a disaster recovery relationship, with the first storage node. A dirty region log may be maintained to track regions within the first storage that have been modified by storage operations that have not been replicated to the second storage. Accordingly, a catchup synchronization phase (e.g., asynchronous replication by a resync scanner) may be performed to replicate storage operations (e.g., replicate data within dirty regions of the first storage that were modified by such storage operations) to the second storage until the first storage and the second storage are synchronized.

公开(公告)号：US20170091299A1

公开(公告)日：2017-03-30

申请号：US14865442

申请日：2015-09-25

Applicant: NetApp Inc.

Inventor： Ching-Yuk Paul Ngan ,  Kanwaldeep Singh ,  Yuedong Mu ,  Manoj Kumar V Sundararajan

IPC: G06F17/30

Abstract: One or more techniques and/or computing devices are provided for data synchronization. For example, an in-flight log may be maintained to track storage operations that are received by a first storage node, but have not been committed to both first storage of the first storage node and second storage of a second storage node that has a replication relationship, such as a disaster recovery relationship, with the first storage node. A dirty region log may be maintained to track regions within the first storage that have been modified by storage operations that have not been replicated to the second storage. Accordingly, a catchup synchronization phase (e.g., asynchronous replication by a resync scanner) may be performed to replicate storage operations (e.g., replicate data within dirty regions of the first storage that were modified by such storage operations) to the second storage until the first storage and the second storage are synchronized.

公开(公告)号：US11341101B2

公开(公告)日：2022-05-24

申请号：US16868671

申请日：2020-05-07

Applicant: NetApp Inc.

Inventor： Ching-Yuk Paul Ngan ,  Kanwaldeep Singh ,  Yuedong Mu ,  Manoj Kumar V Sundararajan

IPC: G06F16/00 ,  G06F16/178 ,  G06F11/14 ,  G06F11/20

Abstract: One or more techniques and/or computing devices are provided for data synchronization. For example, an in-flight log may be maintained to track storage operations that are received by a first storage node, but have not been committed to both first storage of the first storage node and second storage of a second storage node that has a replication relationship, such as a disaster recovery relationship, with the first storage node. A dirty region log may be maintained to track regions within the first storage that have been modified by storage operations that have not been replicated to the second storage. Accordingly, a catchup synchronization phase (e.g., asynchronous replication by a resync scanner) may be performed to replicate storage operations (e.g., replicate data within dirty regions of the first storage that were modified by such storage operations) to the second storage until the first storage and the second storage are synchronized.

公开(公告)号：US10162718B2

公开(公告)日：2018-12-25

申请号：US15368610

申请日：2016-12-04

Applicant: NetApp Inc.

Inventor： Kanwaldeep Singh ,  Austin Diec ,  Manoj Sundararajan

IPC: G06F3/06 ,  G06F11/14 ,  G06F11/16 ,  H04L1/08

Abstract: Methods and systems for tracking information that is transferred from a source to a destination storage system are provided. The source storage system maintains a first data structure for indicating that a storage block has been transferred. The destination storage system receives the storage block and updates a second data structure to indicate that the storage block has been received. The first data structure and the second data structure are compared to determine that the storage block was successfully transferred from the source storage system and received by the destination storage system.

公开(公告)号：US09513999B2

公开(公告)日：2016-12-06

申请号：US14154030

申请日：2014-01-13

Applicant: NETAPP, INC.

Inventor： Kanwaldeep Singh ,  Austin Diec ,  Manoj Sundararajan

IPC: G06F11/14 ,  G06F11/16

CPC classification number: G06F11/1612 ,  G06F3/0604 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/067 ,  G06F11/1451 ,  G06F11/1464 ,  G06F11/1471 ,  H04L1/08

Abstract: Methods and systems for tracking information that is transferred from a source to a destination storage system are provided. The source storage system maintains a first data structure for indicating that a storage block has been transferred. The destination storage system receives the storage block and updates a second data structure to indicate that the storage block has been received. The first data structure and the second data structure are compared to determine that the storage block was successfully transferred from the source storage system and received by the destination storage system.

Abstract translation: 提供了用于跟踪从源传输到目的地存储系统的信息的方法和系统。 源存储系统维护用于指示存储块已被传送的第一数据结构。 目的地存储系统接收存储块并更新第二数据结构以指示存储块已被接收。 对第一数据结构和第二数据结构进行比较，以确定存储块是否成功从源存储系统传输并由目标存储系统接收。

公开(公告)号：US20150199240A1

公开(公告)日：2015-07-16

申请号：US14154030

申请日：2014-01-13

Applicant: Netapp, Inc.

Inventor： Kanwaldeep Singh ,  Austin Diec ,  Manoj Sundararajan

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F11/1612 ,  G06F3/0604 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/067 ,  G06F11/1451 ,  G06F11/1464 ,  G06F11/1471 ,  H04L1/08

Abstract: Methods and systems for tracking information that is transferred from a source to a destination storage system are provided. The source storage system maintains a first data structure for indicating that a storage block has been transferred. The destination storage system receives the storage block and updates a second data structure to indicate that the storage block has been received. The first data structure and the second data structure are compared to determine that the storage block was successfully transferred from the source storage system and received by the destination storage system.

Abstract translation: 提供了用于跟踪从源传输到目的地存储系统的信息的方法和系统。 源存储系统维护用于指示存储块已被传送的第一数据结构。 目的地存储系统接收存储块并更新第二数据结构以指示存储块已被接收。 对第一数据结构和第二数据结构进行比较，以确定存储块是否成功从源存储系统传输并由目标存储系统接收。