Patent ID: 11941278
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A method, comprising:
storing data for respective replicas of respective volume partitions in log-structured storages of respective head nodes of a data storage system, wherein the log-structured storages of the head nodes comprise a volume data portion and a metadata portion;
storing, to one or more mass storage devices of the data storage system, respective copies of the metadata portions of the volume partitions;
detecting a failed one of the plurality of head nodes based on a failure of the failed head node to respond to a ping; and
initiating, for one or more identified volume partitions having a replica stored on the failed head node, one or more replacement replicas for the one or more identified volume partitions,
wherein the one or more replacement replicas are implemented on one or more respective remaining head nodes of the data storage system that were not detected to be failed, and
wherein volume metadata for the one or more replacement replicas is re-mirrored from one or more of the respective copies of the metadata portions stored on the one or more mass storage devices of the data storage system.