Abstract: Techniques for configuring a system may include selecting one of a plurality of I/O slots to be allocated a number of lanes connected to a processor; and responsive to selecting the one I/O slot, sending a selection signal to a multiplexer that selects the one I/O slot from the plurality of I/O slots and configures the number of lanes for use by the one I/O slot where the number of lanes connect the one I/O slot to the processor. The system may be a data storage system and the lanes may be PCIe lanes used for data transmission. For each I/O slot, an I/O module may be inserted, removed or replaced (e.g., removed and then replaced with a new I/O card). A management controller may select the one I/O slot and send the selection signal in accordance with one or more policies. The system may support hot plug I/O modules.

Abstract: Techniques for configuring a system may include selecting one of a plurality of I/O slots to be allocated a number of lanes connected to a processor; and responsive to selecting the one I/O slot, sending a selection signal to a multiplexer that selects the one I/O slot from the plurality of I/O slots and configures the number of lanes for use by the one I/O slot where the number of lanes connect the one I/O slot to the processor. The system may be a data storage system and the lanes may be PCIe lanes used for data transmission. For each I/O slot, an I/O module may be inserted, removed or replaced (e.g., removed and then replaced with a new I/O card). A management controller may select the one I/O slot and send the selection signal in accordance with one or more policies. The system may support hot plug I/O modules.

Abstract: A status monitoring system includes a signal generation subsystem configured to receive a plurality of binary status signals from a plurality of monitored subcomponents and encode the plurality of binary status signals to generate a status signal indicative of the status of the plurality of monitored subcomponents. One or more processing subsystems are configured to receive the status signal and control a controlled subcomponent based, at least in part, upon the status signal.

Abstract: A signal generation subsystem is configured to receive a plurality of status signals from a plurality of monitored subcomponents within a system being monitored and generate a cumulatively-encoded status signal based, at least in part, upon the plurality of binary status signals, which is indicative of the overall health of the system being monitored.

Abstract: A user-configurable decoder circuit is associated with a controlled subcomponent and is configured to receive a cumulatively-encoded status signal and compare the cumulatively-encoded status signal to a user-definable threshold that defines a subcomponent policy for the controlled subcomponent.

Abstract: A status monitoring system includes a signal generation subsystem configured to provide a status signal indicative of the status of one or more monitored subcomponents. A processing subsystem is associated with a controlled subcomponent and is configured to: assign a subcomponent policy to the controlled subcomponent, receive the status signal, compare the status signal to the subcomponent policy, and effectuate a procedure on the controlled subcomponent based, at least in part, upon the comparison of the status signal and the subcomponent policy.