Invention Grant
- Patent Title: Token management for write commands transmitted by a host over a plurality of interfaces to a storage controller
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Application No.: US16289461Application Date: 2019-02-28
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Publication No.: US10996891B2Publication Date: 2021-05-04
- Inventor: Beth A. Peterson , Kevin J. Ash , Lokesh M. Gupta , Chung M. Fung
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Konrad Raynes Davda & Victor LLP
- Agent Rabindranath Dutta
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F13/16 ; G06F13/42

Abstract:
A host computational device transmits a first write command with a first token over a first interface to a storage controller. In response to receiving an indication by the host computational device that the first write command has failed in the storage controller, the host computational device transmits a second write command with a second token over a second interface to the storage controller, wherein the second write command is a retry of the first write command that failed, wherein the second token is identical to the first token, and wherein the second interface is a slower communication link than the first interface.
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