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"Loss of host-side connection redundancy" due to faulty FC link

  1. Last updated
    May 31, 2024
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Category:
e-series-systems
Specialty:
esg
Last Updated:
5/31/2024, 5:38:31 AM

Applies to

  • NetApp E-Series
  • Fibre Channel connectivity

Issue

  • Alert report by the system and persist after controller reboot:
Loss of host-side connection redundancy detected

  • Error in RECOVERY-GURU-PROCEDURES.HTML:

ALB_HOST_REDUNDANCY_LOST-Recovery Failure Type Code: 475

  • Error in Major Event Logs PARSER:

Loss of host-side connection redundancy detected - Host hostname <--CRITICAL

Volume not on preferred path due to AVT/RDAC failover - Shelf XX, Bay X <--CRITICAL

  • FC links on port 0a and 0b for one controller are down:

Host interface:                  Fibre
         Host Interface Card(HIC):     Baseboard
         Channel:                      1
         Port:                         0a, 0a
         Current ID:                   Not applicable/0xFFFFFFFF
         Preferred ID:                 0/0xEF
         NL-Port ID:                   0xFFFFFF
         Maximum data rate:            16 Gbps
         Current data rate:            Not available
         Data rate control:            Auto
         Link status:                  Down

Host interface:                  Fibre
         Host Interface Card(HIC):     Baseboard
         Channel:                      2
         Port:                         0b, 0b
         Current ID:                   Not applicable/0xFFFFFFFF
         Preferred ID:                 1/0xE8
         NL-Port ID:                   0xFFFFFF
         Maximum data rate:            16 Gbps
         Current data rate:            Not available
         Data rate control:            Auto
         Link status:                  Down

  • Before “Loss of host-side connection redundancy” error, port 0a  was up

 

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