Dell Products Inc.

Sakti Lakshmiy R Paulchamy

Erik P Smith

Pawan Kumar Singal

Kavitha Govindasami

Balasubramanian Muthukrishnan

Claudio Desanti

Raja Subbiah

Kavitha Kuppusamy

Embodiments presented herein enable non-volatile memory express (NVMe®) subsystem-driven command execution requests. By configuring subsystems as pull model devices, subsystems can request a centralized discovery controller to perform one or more operations. Embodiments may leverage a command execution request architecture to achieve the subsystem-driven pull model functionality.

Systems and methods for command execution request for pull model devices

Systems and methods utilize discovery log entry identifiers (DLEIDs) to identify individual discovery log page entries (DLPEs) in a discovery log page, for example, to allow a name server to manipulate DLPEs and perform specific operations, including zoning operations. Thus, DLEIDs advantageously reduce data flow and repetitive full discovery log page requests and responses and associated processing times; especially, in scenarios where changes to data are minimal. Further, a DLEID-based get log page command may be used to perform push and pull registrations, e.g., to query a specific set of end devices. Advantageously, this reduces message size or sizes and, thus, the number of messages that need to be exchanged, e.g., during an addition or deletion of end devices, especially in larger environments.

Discovery log entry identifiers (DLEIDs) applications in non-volatile memory express® environments

Systems and methods utilize discovery log entry identifiers (DLEIDs) to identify individual discovery log page entries (DLPEs) in a discovery log page, for example, to allow a name server to manipulate DLPEs and perform specific operations, including zoning operations. Thus, DLEIDs advantageously reduce data flow and repetitive full discovery log page requests and responses and associated processing times; especially, in scenarios where changes to data are minimal Further, a DLEID-based get log page command may be used to perform push and pull registrations, e.g., to query a specific set of end devices. Advantageously, this reduces messages size and, thus, the number of messages that need to be exchanged, e.g., during an addition or deletion of end devices, especially in larger environments.

Discovery log entry identifiers (DLEIDs) for devices in non-volatile memory express™-over fabrics (NVMe-oF™) environments

A variable length field FC address system includes a source device coupled to a target device via an FC fabric. A first FC switch device identifies a number of FC switch devices in the FC fabric, a number of links provided by each FC switch device, a number of sessions required by each link, and then allocates unique FC addresses to the FC switch devices. Each unique FC address associated with an FC switch device includes a domain identifier provided by a first number of bits based on the number of FC switch devices in the FC fabric, an area identifier provided by a second number of bits based on the number of links provided by that FC switch device, and a session identifier provided by a third number of bits based on the number of sessions required by the link provided by that FC switch device.

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Tamil Nadu, India

Sakti Lakshmiy R Paulchamy