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Node reports Mixed Path due to missing drawer from DS460C shelf

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Applies to

  • FAS/AFF Systems
  • DS460C Disk Shelves

Issue

  • One of the nodes in the HA pair is in Mixed-Path HA configuration but the partner node is in Multi-Path HA configuration:

::> system node run -node * -command sysconfig -a

NetApp Release 9.11.1P12: Fri Sep 22 07:58:50 EDT 2023
    System ID: 053XXXXX21 (Node-01); partner ID: 053XXXXX20 (Node-02)
    System Serial Number: 95XXXX000002 (Node-01)
    System Rev: F0
    System Storage Configuration: Multi-Path HA

NetApp Release 9.11.1P12: Fri Sep 22 07:58:50 EDT 2023
    System ID: 053XXXXX20 (Node-02); partner ID: 053XXXXX21 (Node-01)
    System Serial Number: 95XXXX000070 (Node-02)
    System Rev: F0
    System Storage Configuration: Mixed-Path HA

  • One of the DS460C shelf drawers is missing on the affected node:

::> system node run -node * sasadmin expander_map

Node-01:

Expanders on channel 0a: 
Level    1: WWN 500a0980085aa80d, ID 11, Serial Number ' SHJHUXXX0000071', Product 'DS46012IOM12A   ', Rev '0310', Slot A
Level  1.1: WWN 5d039ea2e12ae03f, ID 216, Serial Number '        0384AB80', Product 'Traf DCM        ', Rev '0648', Slot A
Level  1.2: WWN 5d039ea2e11ca03f, ID 102, Serial Number '        03847280', Product 'Traf DCM        ', Rev '0648', Slot A
Level  1.3: WWN 5d039ea2e0be603f, ID 197, Serial Number '        0382F980', Product 'Traf DCM        ', Rev '0648', Slot A
Level  1.4: WWN 5d039ea2e05d003f, ID 176, Serial Number '        03817400', Product 'Traf DCM        ', Rev '0648', Slot A
Level  1.5: WWN 5d039ea2e060a03f, ID 227, Serial Number '        03818280', Product 'Traf DCM        ', Rev '0648', Slot A

Node-02 - missing drawer 1.2:

Expanders on channel 0a: 
Level    1: WWN 500a0980085a9bfd, ID 11, Serial Number ' SHJHUXXX0000071', Product 'DS46012IOM12A   ', Rev '0310', Slot B
Level  1.1: WWN 5d039ea2e12af03f, ID 200, Serial Number '        0384ABC0', Product 'Traf DCM        ', Rev '0648', Slot B
Level  1.3: WWN 5d039ea2e0be703f, ID 213, Serial Number '        0382F9C0', Product 'Traf DCM        ', Rev '0648', Slot B 
Level  1.4: WWN 5d039ea2e05d103f, ID 192, Serial Number '        03817440', Product 'Traf DCM        ', Rev '0648', Slot B
Level  1.5: WWN 5d039ea2e060b03f, ID 211, Serial Number '        038182C0', Product 'Traf DCM        ', Rev '0648', Slot B

  • Disk redundancy failure alert is reported in the event logs by the affected node:

[Node-02: dsa_disc: callhome.dsk.redun.fault:error]: Call home for DISK REDUNDANCY FAILED

  • Some disk drives show only 3 paths instead of 4:

::> storage show disk -fields path-count
disk    path-count
------- ----------
1.10.0  4
1.10.1  4
1.10.2  4
1.10.3  4
1.10.4  4
1.10.5  4
1.10.6  4
1.10.7  4
1.10.8  4
1.10.9  4
1.10.10 4
1.10.11 4
1.10.12 3
1.10.13 3
1.10.14 3
1.10.15 3
1.10.16 3
1.10.17 3
1.10.18 3
1.10.19 3
1.10.20 3
1.10.21 3
1.10.22 3
1.10.23 3

 

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