Aggregated cache supporting dynamic ratios in a vSAN architecture
US11221952B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2020 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/502
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In vSAN (virtual Storage Area Network) systems, pooled storage resources may be organized into logical disk groups. One drive of a disk group may be designated for caching storage operations directed at the remaining drives of the disk group that provide permanent storage. Each cache drive is partitioned into an allocation for read operations and an allocation for write operations. Embodiments provide the vSAN system with use of virtual cache that is backed by the cache drives of each disk group in the vSAN system. Embodiments adjust the cache memory allocations for individual cache drives of each disk group, while utilizing the virtual cache that adheres to a fixed cache allocation ratio required by the vSAN system. The number and type of cache misses by each of the individual cache drives is monitored and used to adjust the sizes of the read and write cache allocations in each cache drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.