Invention Grant
- Patent Title: Lightweight proxy for handling SCSI commands in an active array-standby array configuration
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Application No.: US16538112Application Date: 2019-08-12
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Publication No.: US11269802B2Publication Date: 2022-03-08
- Inventor: Vikash Mehta
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Patent Law Works LLP
- Main IPC: G06F13/42
- IPC: G06F13/42 ; G06F13/10 ; G06F11/20 ; G06F13/12
Abstract:
An apparatus, system, and method are disclosed that service SCSI commands, including SCSI PGR commands in the standby node of a storage system that operates in an Asymmetric Logic Unit Access (ALUA) mode. The apparatus, system, and method service SCSI PGR commands without maintaining peer/proxy port information. The apparatus, system, and method service SCSI commands by forwarding/proxying commands between the active node and standby node, in both directions and use a modified command descriptor block (MCDB) message to conduct the communications between the nodes.
Information query
