Dell Products Inc.

Komal Kumar Dhote

Rama Rao Bisa

Chitrak Gupta

Suresh Vijaykumar

Prasanna Kumar Sahoo

Elie Antoun Jreij

Akkiah Choudary Maddukuri

Austin Patrick Bolen

Arun Muthaiyan

Kala Sampathkumar

Manjunath Am

Santosh Kumar Sahu

Christopher Domingo Arzola

Manjunath A M

Mohan Murali Gurram

According to one embodiment, an Information Handling System (IHS) includes at least one storage unit that conforms to an NVMe specification and first and second BMCs. The BMCs are in communication with the storage unit and each configured with computer-executable instructions to negotiate with the second BMC, whether first or second BMC is to be an active BMC such that the other of the first or second BMCs becomes a passive BMC. When the first BMC is the active BMC, allow shared commands to be issued to a storage unit conforming to a Non-Volatile Memory Express (NVMe) specification; otherwise, inhibit the shared commands from being issued to the storage unit.

Redundant baseboard management controller (BMC) system and method

A system for polling components is disclosed that includes a plurality of processors and a control system configured to interface with each of the plurality of processors, and to 1) poll each of the plurality of processors using a first polling loop and 2) transfer one of the plurality of processors to a second polling loop if the one of the plurality of processors is non-responsive to the poll.

System and method to provide optimal polling of devices for real time data

Embodiments are described for detecting and recovering from an inoperable device management bus. A remote management controller is configured to offload device management bus transactions that use a messaging protocol. The messing protocol transactions are offloaded to a bus protocol controller that is responsible for managing bus operations using the messaging protocol. The bus protocol controller updates a set of bus status counters stored in a shared memory based on the processing of the offloaded messaging protocol transactions. The remote management controller processes device management bus transactions that use a bus protocol and updates the bus status counters based on the status of the bus protocol transactions. The remote management controller determines the status of the device management bus based on the bus status counters in shared memory, if the device management bus is inoperable, resets the remote management controller.

System and method to detect and recover from inoperable device management bus

Embodiments are described for operating a device management bus coupled to a remote access controller and a managed device. The remote access controller detects an inoperable state of the bus and determines a FRU (Field Replaceable Unit) memory is accessible on the managed device. A predefined reset indicator is written to the FRU memory. The managed device monitors for the reset indicator being written to a specified location in FRU memory. Upon detecting the reset indicator in FRU memory, the managed device resets a bus controller coupled to the device management bus and transmits a reset notification on the device management bus. The remote access controller may include an I2C shim that controls access to an I2C multiplexer utilized for transmitting I2C commands from a service processor and an I2C coprocessor, preventing certain inoperable bus states due to concurrent operation of the I2C multiplexer by the I2C coprocessor and the service processor.

System and method for managing, resetting and diagnosing failures of a device management bus

Methods, systems and devices are provided for configuring an airflow cooling system shared by a plurality of IHSs (Information Handling Systems). An initial fan speed is set by a chassis manager that controls airflow cooling shared by the IHSs. The chassis manager broadcasts the initial fan speed to the plurality of IHSs. Each IHS receives the initial fan speed broadcast and determines its own fan speed requirements. If an IHS requires a fan speed greater than the initial fan speed, the IHS broadcasts a fan speed request. Each IHS continues to monitor fan speed broadcasts and broadcasts a request if its determined fan speed is greater than the most recent broadcast. The IHS that broadcasts the greatest fan speed request is designated as the dominant IHS. The chassis manager sets the airflow cooling system fan speed based on the fan speed requests broadcast by the dominant IHS.

System and method to enhance airflow request algorithm for modular chassis

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Raipur, India

Komal Kumar Dhote