Management of virtual tape volumes using data page atomic units
US6816957B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1999 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | May 21, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An intelligent data storage manager is operational in a virtual data storage system that uses a storage element to store data for a host processor. The storage manager includes a host interface and a controller. The host interface receives a virtual volume having virtual blocks from a host processor. The controller sequentially segments the virtual volume into data pages. Each data page includes virtual blocks of the virtual volume. The controller generates a meta data page associated with the virtual volume to map the data pages to the virtual blocks of the virtual volume. The controller uses the meta data page to selectively store the data pages onto the storage element. The storage element has a partitioning configuration and the amount of the virtual blocks included by each data page is a function of the partitioning configuration of the storage element. The meta data page associated with the virtual volume includes meta data page records. Each meta data page record includes meta data records and each of the meta data records corresponds to at least one virtual block. The storage element includes high and low performance storage elements. The controller uses the meta data page …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.