Apparatus to manage efficient data migration between tiers
US8782369B2 · kind B2 · utility
3Cited by
1References
20Claims
0Family size
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Key dates
| Filing date | Nov 15, 2011 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | May 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0683
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage system having a slow tier and a fast tier maintains hot data on the fast tier by migrating data from the slow tier to reserve space on the fast tier as data becomes hot over time. The system maintains a reserve space table and performs a mass migration of data from the fast tier to the slow tier. Data migration is frequently unidirectional with data migrating from the slow to the fast tier, reducing overhead during normal operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.