Mel_Ev_Sas_Backend_Discovery_Error - 0X165A; Mel_Ev_Dsas_Topology_Miswire - 0X1700 - Lenovo ThinkSystem DE Series Hardware Installation And Maintenance Manual

Event Category - State (0x5)
Event Component Type - Controller (0x0, 0x8)
Event Specific Data - Optional data is not provided with this event.
RecoveryFailureType - N/A

MEL_EV_SAS_BACKEND_DISCOVERY_ERROR - 0x165A

This event occurs when: The event is logged when a connectivity error has been detected during the SAS
backend discovery processing. The error means that there has been a loss of redundancy with the
connectivity to trays and/or drives.
Event Name - SAS Backend Discovery Error
Event description: An error has been detected during SAS backend discovery processing
Event Group - SAS-Specific Source Driver and Miscellaneous
Event Priority - CRITICAL_EVENT
Log Group - Controller (0x1)
Event Category - Error (0x1)
Event Component Type - Controller (0x0, 0x8)
Event Specific Data - Optional data is not provided with this event.
RecoveryFailureType - N/A

MEL_EV_DSAS_TOPOLOGY_MISWIRE - 0x1700

This event occurs when: A RAID controller detects an invalid SAS topology, such as an expander PHY with a
table routing attribute attached to another expander PHY with a table routing attribute, a SAS loop, or
multiple ports with the same SAS address.
Event Name - DSAS Topology Miswire
Event description: Invalid SAS topology detected
Event Group - SAS-Specific Destination Driver
Event Priority - CRITICAL_EVENT
Log Group - System (0x0)
Event Category - Error (0x1)
Event Component Type - Tray Component (ESM, GBIC/SFP, Power Supply, or Fan) (0x0, 0x7)
Event Specific Data - Optional data is not provided with this event.
RecoveryFailureType - REC_SAS_PORT_MISWIRED ( SASMiswire.html ), REC_SAS_LOOP_MISWIRE (
SASLoopMiswire.html )
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ThinkSystem DE Series Hardware Installation and Maintenance Guide for 2U Enclosures