Storage system with consistent initiation of data replication across multiple distributed processing modules
US10324640B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2018 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Jan 22, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/83
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A first storage system in one illustrative embodiment is configured to participate in a replication process with a second storage system. In conjunction with a synchronous replication mode of the replication process, a first processing module of a distributed storage controller of the first storage system is configured to write one or more data pages in the first storage system in accordance with a write request received from a host device, to send a corresponding replication write request to the second storage system, to determine whether or not the one or more data pages have been successfully replicated to the second storage system, and to update content-based signature mapping information of the one or more data pages responsive to receipt of an indication of successful replication. Responsive to a determination that the write request was received prior to initiation of the synchronous replication mode, an asynchronous-to-synchronous transition cycle scan operation is restarted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.