Avoiding use of an inter-unit network in a storage system having multiple storage control units
US7849265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2007 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Feb 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/5022
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A storage system provides virtual ports, and is able to transfer the virtual ports among physical ports located on multiple storage control units making up the storage system. The storage system is able to manage logical volumes and/or virtual volumes and virtual ports as a group when considering whether to move logical/virtual volumes and/or virtual ports to another storage control unit in the storage system. When the storage system is instructed to transfer volumes, virtual ports, or a group of volumes and virtual ports among the storage control units, the storage system determines whether an inter-unit network will be required to be used following the transfer. When the storage system determines that the inter-unit network will be required if the transfer takes place, the storage system determines and presents an alternate storage control unit for the transfer to avoid use of the inter-unit network, thereby avoiding degraded performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.