System and method for storage area network switch port failure recovery
US7398421B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2004 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Aug 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for storage area network switch port failure recovery. A system may include several hosts, storage devices and a storage area network (SAN) switch. The SAN switch may include several ports, where each host is coupled to a respective host port and each storage device is coupled to a respective storage port. The SAN switch may also include virtualization logic configured to map several of the storage devices as a volume presented to the hosts via the respective host ports, and an input/output (I/O) tracking mechanism configured to store information about write operations in progress at each of the ports. In response to a failure of a given port occurring while write operation(s) to the volume received via one or more of the respective host ports are in progress, the SAN switch may be configured to initiate consistency recovery of the volume using the stored information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.