公开(公告)号：US11966361B2

公开(公告)日：2024-04-23

申请号：US17536515

申请日：2021-11-29

Applicant: NetApp Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F16/11 ,  G06F11/14 ,  G06F12/121 ,  G06F16/13 ,  H04L67/568

CPC classification number: G06F16/128 ,  G06F11/1448 ,  G06F11/1464 ,  G06F12/121 ,  G06F16/13 ,  H04L67/568

Abstract: With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer the time penalty of downloading the stable blocks for restoring the recent snapshot. Creating synthetic baseline snapshots and refreshing eviction data of stable data blocks can avoid eviction of stable data blocks and reduce the risk of violating a recovery time objective.

公开(公告)号：US10282099B1

公开(公告)日：2019-05-07

申请号：US15796467

申请日：2017-10-27

Applicant: NetApp, Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F11/14 ,  G06F3/06

Abstract: Intelligent snapshot tiering facilitates efficient management of snapshots and efficient restore of snapshots. For intelligent snapshot tiering, a storage appliance can limit cross-tier migration to invalidated data blocks of a snapshot instead of an entire snapshot. Based on a policy, a storage appliance can identify a snapshot to be migrated to another storage tier and then determine which data blocks are invalidated by an immediately succeeding snapshot. This would limit network bandwidth consumption to the invalidated data blocks and maintain the valid data blocks at the faster access storage tier since the more recent snapshots are more likely to be restored.

公开(公告)号：US20240273064A1

公开(公告)日：2024-08-15

申请号：US18641602

申请日：2024-04-22

Applicant: NetApp, Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F16/11 ,  G06F11/14 ,  G06F12/121 ,  G06F16/13 ,  H04L67/568

CPC classification number: G06F16/128 ,  G06F11/1448 ,  G06F11/1464 ,  G06F12/121 ,  G06F16/13 ,  H04L67/568

Abstract: With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer the time penalty of downloading the stable blocks for restoring the recent snapshot. Creating synthetic baseline snapshots and refreshing eviction data of stable data blocks can avoid eviction of stable data blocks and reduce the risk of violating a recovery time objective.

公开(公告)号：US10346354B2

公开(公告)日：2019-07-09

申请号：US15338272

申请日：2016-10-28

Applicant: NetApp, Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F16/11 ,  G06F16/13 ,  H04L29/08 ,  G06F12/121 ,  G06F11/14

Abstract: With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer the time penalty of downloading the stable blocks for restoring the recent snapshot. Creating synthetic baseline snapshots and refreshing eviction data of stable data blocks can avoid eviction of stable data blocks and reduce the risk of violating a recovery time objective.

公开(公告)号：US20170277597A1

公开(公告)日：2017-09-28

申请号：US15081706

申请日：2016-03-25

Applicant: NetApp, Inc.

Inventor： Samuel A. Dillon ,  Kshitij Wadhwa ,  Ajay Pratap Singh Kushwah ,  Sumeeth Channaveerappa Kyathanahalli ,  Sudhindra Prasad Tirupati Nagaraj

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F11/1453 ,  G06F11/1456 ,  G06F11/1464

Abstract: A storage tier manager efficiently creates different representations of a dataset backup for different retention periods. Each of the representations of the dataset backup is distinctly identifiable despite initially representing a same dataset backup. The representations are structured metadata corresponding to the dataset backup. One representation is a cached backup version of the dataset backup (“cached backup” or “cached representation”) provided for low latency access while residing at a storage tier of the backup appliance for a relatively short retention period according to a lifecycle management policy. The other representation is a cloud backup version of the dataset backup (“cloud backup” or “cloud representation”) provided for persisting into cloud storage for a longer retention period according to the lifecycle management policy.

公开(公告)号：US20170277596A1

公开(公告)日：2017-09-28

申请号：US15081672

申请日：2016-03-25

Applicant: NetApp, Inc.

Inventor： Sumeeth Channaveerappa Kyathanahalli ,  Samuel A. Dillon ,  Ajay Pratap Singh Kushwah ,  Sudhindra Prasad Tirupati Nagaraj ,  Kshitij Wadhwa

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F16/125 ,  G06F11/1448 ,  G06F11/1456 ,  G06F16/27

Abstract: A storage tier manager creates different representations of a dataset backup for different retention periods. Each of the representations of the dataset backup is distinctly identifiable despite initially representing a same dataset backup. The representations are structured metadata corresponding to the dataset backup. One representation is a cached backup version of the dataset backup (“cached backup” or “cached representation”) provided for low latency access while residing at a storage tier of the backup appliance for a relatively short retention period according to a lifecycle management policy. The other representation is a cloud backup version of the dataset backup (“cloud backup” or “cloud representation”) provided for persisting into cloud storage for a longer retention period according to the lifecycle management policy.

公开(公告)号：US11188500B2

公开(公告)日：2021-11-30

申请号：US16435829

申请日：2019-06-10

Applicant: NetApp Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F16/11 ,  G06F16/13 ,  G06F11/14 ,  G06F12/121 ,  H04L29/08

Abstract: With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer the time penalty of downloading the stable blocks for restoring the recent snapshot. Creating synthetic baseline snapshots and refreshing eviction data of stable data blocks can avoid eviction of stable data blocks and reduce the risk of violating a recovery time objective.

公开(公告)号：US20180121454A1

公开(公告)日：2018-05-03

申请号：US15338272

申请日：2016-10-28

Applicant: NetApp, Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F17/30 ,  G06F12/121 ,  H04L29/08

CPC classification number: G06F16/128 ,  G06F11/1448 ,  G06F11/1464 ,  G06F12/121 ,  G06F16/13 ,  H04L67/2842

Abstract: With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer the time penalty of downloading the stable blocks for restoring the recent snapshot. Creating synthetic baseline snapshots and refreshing eviction data of stable data blocks can avoid eviction of stable data blocks and reduce the risk of violating a recovery time objective.

公开(公告)号：US20190294586A1

公开(公告)日：2019-09-26

申请号：US16435829

申请日：2019-06-10

Applicant: NetApp Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F16/11 ,  G06F16/13 ,  G06F11/14 ,  G06F12/121 ,  H04L29/08

Abstract: With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer the time penalty of downloading the stable blocks for restoring the recent snapshot. Creating synthetic baseline snapshots and refreshing eviction data of stable data blocks can avoid eviction of stable data blocks and reduce the risk of violating a recovery time objective.

公开(公告)号：US20190129621A1

公开(公告)日：2019-05-02

申请号：US15796467

申请日：2017-10-27

Applicant: NetApp, Inc.

Inventor： Ajay Pratap Singh Kushwah ,  Ling Zheng ,  Sharad Jain

IPC: G06F3/06 ,  G06F11/14

Abstract: Intelligent snapshot tiering facilitates efficient management of snapshots and efficient restore of snapshots. For intelligent snapshot tiering, a storage appliance can limit cross-tier migration to invalidated data blocks of a snapshot instead of an entire snapshot. Based on a policy, a storage appliance can identify a snapshot to be migrated to another storage tier and then determine which data blocks are invalidated by an immediately succeeding snapshot. This would limit network bandwidth consumption to the invalidated data blocks and maintain the valid data blocks at the faster access storage tier since the more recent snapshots are more likely to be restored.