Storage controlling apparatus, computer-readable recording medium having storage controlling program stored therein, and storage controlling method
US10528468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2016 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Mar 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/604
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage controlling apparatus includes a processor, wherein the processor: controls a first counter configured to count, among data stored in a cache memory and relating to an access request, a number of data which are not written in storage volumes of a target of the access request, for each storage volume; determines, in response to reception of a first access request, whether or not a first ratio of a counter value of the first counter to a number of data allocated already to the cache memory into a first storage volume exceeds a first threshold value, the counter value of the first counter corresponding to the first storage volume which is a target of the first access request; and performs a write back process of data from the cache memory into the first storage volume where the first ratio exceeds the first threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.