Optimizing deduplication hit-rate in a remote copy environment
US12189487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2023 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Mar 23, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, system, computer program product and computer program for managing a storage system, comprising a primary system and a backup system, wherein the backup system is in a copy relationship with the primary system, comprising: in response to a write operation, the write operation comprising first data: calculating a cryptographic value for the first data; scanning a first directory to identify an entry corresponding to the cryptographic value to determine a first set of addresses associated with the write operation; transmitting the first set of addresses to the backup system; and updating the first directory with a first entry for the write operation, the first entry comprising a pointer to the first set of addresses; updating a second directory with a second entry for the write operation, the second entry comprising a pointer to a second set of addresses corresponding to the first set of addresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.