Multi-pathing with SCSI I/O referrals
US8219715B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Jan 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/067
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a method for providing multi-pathing via Small Computer System Interface Input/Output (SCSI I/O) referral between an initiator and a storage cluster which are communicatively coupled via a network, the storage cluster including at least a first target device and a second target device. The method includes receiving an input/output (I/O) at the first target device from the initiator via the network. The I/O includes a data request. The method further includes transmitting a SCSI I/O referral list to the initiator when data included in the data request is not stored on the first target device, but is stored on the second target device. The referral list includes first and second port identifiers for identifying first and second ports of the second target device respectively. The first and second ports of the target device are identified as access ports for accessing the data requested in the data request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.