Skip to main content
NetApp Knowledge Base

E-Series Host Redundancy Lost alert due to incorrect cabling with FC host

  1. Last updated
  2. Save as PDF
Views:
22
Visibility:
Public
Votes:
0
Category:
e-series-santricity-os-controller-software
Specialty:
esg
Last Updated:

Applies to

  • NetApp E-Series
  • SANtricity OS
  • All FC ports are UP

Issue

  • Recovery Guru in SANtricity System Manager displays Host Redundancy Lost

  • Loss of host-side connection redundancy detected notification is delivered
  • RECOVERY-GURU-PROCEDURES.HTML shows ALB_HOST_REDUNDANCY_LOST

Failure Entry N: ALB_HOST_REDUNDANCY_LOST-Recovery Failure Type Code: 475
Storage array: <STORAGE_ARRAY>
Affected host: <HOST>
Affected controller: Controller in bay <A/B>
End of Failure Entry 1: Back to top

  • STORAGE-ARRAY-PROFILE and STATE-CAPTURE-DATA indicate that 2 FC ports on the host are connecting to the single controller
    • STORAGE-ARRAY-PROFILE > HOST-TO-VOLUME ASSIGNMENTS shows the host has 2 FC ports
                  Host:                            <HOST>                                
                     Host type:                    Windows (clustered or non-clustered)  
                     Interface type:               Fibre Channel                         
                        Host port identifier:      <FC_WWPN_1>
                        Alias:                     <ALIAS_1>                           
                        Host port identifier:      <FC_WWPN_2>
                        Alias:                     <ALIAS_2>                             
                     Data Assurance (DA) capable:  Yes                                   
                     Large sector size supported:  No                                    
    • STATE-CAPTURE-DATA > ionShow > tditnall 0 from a single controller shows the above 2 FC ports are connecting

...TDITN..:...................................Initiator.....................................:..........IOs..........:........Busy.........Idle
 tditn Ch : Location                      Device Name                        Port Name  Seq : Open  Completed  Errs :          Ms           Ms
------ -- :--------- -------------------------------- -------------------------------- ---- :----- ---------- ----- :------------ ------------
..
     4  2 : <ALIAS_2>                2000f4c7aa0a471f                 <FC_WWPN_2>         6 :    0         12     0 :     2356058            0
..
     6  3 : <ALIAS_1>                2000f4c7aa0a46f7                 <FC_WWPN_1>         4 :    0       1567     0 :     2356058            0

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.