Pure Storage, Inc.
Recovery from a system fault in a cloud-based storage system

Abstract:

Recovery in a cloud-based storage system, including: receiving, by the cloud-based storage system among a plurality of storage systems synchronously replicating a dataset, a request to modify the dataset; generating recovery information indicating whether the request to modify the dataset has been applied on all storage systems in the plurality of storage systems synchronously replicating the dataset; and responsive to a system fault, applying a recovery action in dependence upon the recovery information indicating whether the request to modify the dataset has been applied on all storage systems in the plurality of storage systems synchronously replicating the dataset.