Data storage library with efficient cartridge eject
US6338006B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1999 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Dec 11, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/228
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage library efficiently utilizes I/O slots while maintaining software compatibility by using functional addresses to conduct virtual cartridge moves from storage slots to I/O slots. More particularly, a location-centric library host manages cartridge movement according to functional storage addresses and functional I/O addresses. In reality, the library has multiple cartridge receiving slots, which include physical I/O slots and physical storage slots. In contrast with the physical I/O slots and physical storage slots, functional I/O addresses and functional storage addresses are virtual locations used by the host in managing cartridge locations. Thus, host knowledge of cartridge locations is limited to their functional addresses. The library includes a library map that correlates functional addresses with physical addresses. Initially, an eject command is received from the host. The eject command requests transfer of a cartridge from a source functional storage address to a target functional I/O address. In response to the eject command, irrespective of any physical movement of the cartridge, the library reports successful completion of the requested eject command to th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.