Nvidia Corporation

Nebulon, Inc.

Hewlett Packard Enterprise Development LP

Srinivasa Murthy

Siamak Nazari

Shankar Iyer

David Dejong

Jin Wang

Shayan Askarian Namaghi

Anil Swaroop

Roopesh Tamma

A cluster storage system takes snapshots that are consistent across all storage nodes. The storage system can nearly instantaneously promote a set of consistent snapshots to their respective base volumes to restore the base volumes to be the same as the snapshots. Given these two capabilities, users can restore the system to a recovery point of the user's choice, by turning off storage service I/O, promoting the snapshots constituting the recovery point, rebooting their servers, and resuming storage service I/O.

Recovery of clustered storage systems

A resynchronization operation () adapts according to activity histories () within a storage platform (). An owner node (A) and a backup storage node (B) may track activity such as the IO operations begun and use recent activity to determine respective amounts of data the owner (A) and backup (B) can expect to process without unacceptably degrading storage services. The owner (A) transfer resynchronization data in chunks, each having a size limited by the current amounts the owner (A) and backup (B) determined from current activity. When activity is low or idle, large chunks may be sent to quickly complete resynchronization, while a busy system uses smaller chunks such that the system performance is not adversely affected.

Adaptive adjustment of resynchronization speed

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Cupertino, CA, United States of America

Srinivasa Murthy