Hewlett Packard Enterprise Development LP

Mark Doherty

Siamak Nazari

Jonathan Stewart

Jin Wang

Srinivasa D Murthy

Richard Dalzell

Paul Kinnaird

Peter Hynes

Pierre Labat

Methods and systems for collision handling during an asynchronous replication are provided. A system includes a cache memory system comprising a number of cache memory pages. A collision detector detects when a host is attempting to overwrite a cache memory page that has not been completely replicated. A revision page tagger copies the cache memory page to a free page and tags the copied page as protected.

Collision handling during an asynchronous replication

A system that includes a storage volume comprising a plurality of regions. The system also includes a plurality of nodes to receive transactions related to the storage volume from one or more client computers and execute the transactions. Each node is designated as an owner of one region of the plurality of regions. Each one of the plurality of nodes includes a ticket dispenser for dispensing tickets that ensure that the transactions that are actively being executed have exclusive access to a storage object identified in the transaction.

Storage system transactions

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Belfast, United Kingdom

Mark Doherty