Apparatus and methods for look-ahead virtual volume meta-data processing in a storage controller
US8255634B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2010 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Nov 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/815
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for improved efficiency in accessing meta-data in a storage controller of a virtualized storage system. Features and aspects hereof walk/retrieve meta-data for one or more other I/O requests when retrieving meta-data for a first I/O request. The meta-data may include mapping information for mapping logical addresses of the virtual volume. Meta-data may also include meta-data associated with higher level, enhanced data services provide by or in conjunction with the storage system. Enhanced data services may include features for synchronous mirroring of a volume and/or management of time-based snapshots of the content of a virtual volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.