Mapping of hosts to logical storage units and data storage ports in a data processing system
US7051182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2003 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Jul 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/329
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus has host ports for coupling hosts to data storage devices. The data storage devices are configured into logical storage units, and the apparatus is programmed with a mapping of the hosts to respective logical storage units. The apparatus decodes a host identifier and a logical storage unit specification from each data access request received at each host port, and determines whether or not the decoded host identifier and logical storage unit specification are in conformance with the mapping in order to permit or deny data access of the logical storage unit through the host port. For example, the apparatus includes a switch for routing the data storage access requests from the host ports to ports that provide access to the data storage, and a set of logical volumes of storage are accessible from each of the ports that provide access to the data storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.