Storage controllers with dynamic WWN storage modules and methods for managing data and connections between a host and a storage device
US7757009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2004 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Nov 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/622
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for transferring data between a host and a Serial Attached Small Computer Interface (“SAS”) device using a storage controller is provided. The storage controller includes, a World Wide Name (“WWN”) module that includes a table having plural entries, wherein each row includes a WWN address, an initiator tag value field, an input/output counter value that tracks plural commands for a connection. A WWN index value represents the address of a row having plural entries. The method includes, comparing frame elements of incoming frames, including a unique WWN address with the WWN module entries; and if there is a match, updating a counter value for a connection between the storage controller and a device sending frames. The counter value is increased when a command frame is received and decreased when a command is executed and a response is sent to the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.