Hewlett Packard Enterprise Development LP

Michael Kontz

Derek Alan Sherlock

Harvey Ray

According to an example, a failed component in a fault-tolerant memory fabric may be determined by transmitting request packets along a plurality of routes between the redundancy controller and a media controller in periodic cycles. The redundancy controller may determine whether route failures for all of the plurality of routes have occurred within a number of consecutive periodic cycles. In response to determining that route failures for all of the plurality of routes have occurred within a number of consecutive periodic cycles, the media controller is established as failed. In response to determining that route failures for less than all of the plurality of routes have occurred within the number of consecutive periodic cycles, a fabric device is established as failed.

Determine failed components in fault-tolerant memory

A blockage is detected at a first link based on a delay and/or stoppage of transmission of a data message along the first link between first and second nodes of a plurality of nodes of a fabric. A snapshot message is sent along at least a second link between the first and second nodes in response to the blockage being detected. The second node may capture a fabric state at the second node in response to receiving the snapshot message, before a corrective action occurs.

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Michael Kontz