Data re-MRU to improve asynchronous data replication performance
US11048667B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 28, 2020 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Feb 28, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/172
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for improving asynchronous data replication between a primary storage system and a secondary storage system is disclosed. In one embodiment, such a method includes monitoring, in a cache of the primary storage system, unmirrored data elements needing to be mirrored, but that have not yet been mirrored, from the primary storage system to the secondary storage system. The method maintains an LRU list designating an order in which data elements are demoted from the cache. The method determines whether a data element at an LRU end of the LRU list is an unmirrored data element. In the event the data element at the LRU end of the LRU list is an unmirrored data element, the method moves the data element to an MRU end of the LRU list. A corresponding system and computer program product are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.