公开(公告)号：EP3477482A3

公开(公告)日：2019-08-21

申请号：EP18203066.8

申请日：2018-10-29

Applicant: NetApp, Inc.

Inventor： KUSHWAH, Ajay Pratap Singh ,  ZHENG, Ling ,  JAIN, Sharad

IPC: 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.

公开(公告)号：EP3477482A2

公开(公告)日：2019-05-01

申请号：EP18203066.8

申请日：2018-10-29

Applicant: NetApp, Inc.

Inventor： KUSHWAH, Ajay Pratap Singh ,  ZHENG, Ling ,  JAIN, Sharad

IPC: G06F11/14

CPC classification number: G06F3/0608 ,  G06F3/0647 ,  G06F3/067 ,  G06F11/1446 ,  G06F11/1451 ,  G06F11/1456 ,  G06F2201/84

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：EP3477481A2

公开(公告)日：2019-05-01

申请号：EP18203064.3

申请日：2018-10-29

Applicant: NetApp, Inc.

Inventor： KUSHWAH, Ajay Pratap Singh ,  ZHENG, Ling ,  JAIN, Sharad

IPC: G06F11/14

Abstract: A storage appliance can be designed to facilitate efficient restore of multiple backed up files in a system that allows files to share data blocks. A data management application or storage OS names data blocks and communicates those names to the storage appliance when backing up to or through the storage appliance. The storage appliance can leverage the data block names when restoring a group of files by restoring at data block granularity instead of file granularity. Restoring at the granularity of the data blocks by their names allows the storage appliance to avoid repeatedly sending a same data block to the restore requestor (e.g., a storage OS or data management application) while still instructing the restore requestor how to reconstruct the corresponding file(s) with mappings between valid data ranges and the named data blocks.