Recovery mechanism for I/O module using out-of-band control path
US8099624B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Jan 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system includes a storage server and a storage subsystem having an I/O module coupled to disks. The storage server includes a storage adapter coupled to the I/O module creating an in-band (data) path to access data stored on the disks. The storage server sends a data command through the in-band path to the I/O module for accessing the data stored on the disks. The storage server further includes a network adapter coupled to the I/O module creating an out-of-band control path to control the I/O module. The storage server detects through the in-band path that the I/O module is non-responsive to a data command and automatically changes the behavior of the I/O module (e.g., resets the I/O module) through the out-of-band control path to recover the non-responsive I/O module. The storage server also collects and outputs status data of the I/O module through the out-of-band control path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.