Method and apparatus for enhancing operations in disk array storage devices
US6983353B2 · kind B2 · utility
16Cited by
3References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Apr 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for assuring data consistency during certain operations involving dependent input/output sequences. During such operations a stall application blocks write operations to specified logical devices in a local consistency group while allowing read operations to all devices and write operations to non-specified logical devices. When a write command is directed to a logical device in local consistency group, the host adapter associated with the logical device returns a message to the host that initiates a write command retry. Retries generally continue until a write command is successful.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.