Sequential storage volume replication based on comparison of write session identifiers
US10963483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2017 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Sep 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/178
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described herein are systems and methods for replicating an original sequential data volume to a copied sequential data volume. The two sequential data volumes comprise corresponding data blocks with associated write session identifiers. The write session identifiers may correspond to an applicable write operation. When the original sequential data volume is modified, the copied sequential data volume may also be modified for consistency. The write session identifiers of the two data volumes may be sequentially compared to find a mismatch at a modified data block. The data blocks of the copied sequential data volume are replaced, beginning with the modified data block. Instead of replicating the entire original sequential data volume, the modified data block and any subsequent data blocks are replicated in the copied sequential data volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.