System and method to guarantee overwrite of expired data in a virtual tape server
US6983351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2002 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Jan 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0682
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for guaranteeing overwrite of expired data in a media device, the data being organized according to logical units provided on media devices organized as physical volumes. The method comprises the steps of: maintaining information associated with a status of a physical volume, and updating a physical volume's status information based upon a combination of that volume's prior status and that volume's current status; specifying a time duration that expired logical unit data may remain on a physical volume; based upon the volume's updated status information, determining whether a selected volume has expired data longer than the specified time duration; and, overwriting contents of the volume having data that has expired longer than the specified time duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.