DISK REDUNDANCY FAILED due to failed IOM module
Applies to
- IOM3
- IOM6 or IOM6E
- IOM12 or IOM12E
- IOM12B
- ONTAP 9
Issue
- Autosupport is received with subject "DISK REDUNDANCY FAILED"
- SYSCONFIG-A in autosupport shows both nodes in the HA pair as mixed path:
NetApp Release 9.8P3: Sat Mar 27 04:59:49 EDT 2021
System ID: 0536947201 (node-02); partner ID: 0536947911 (node-01)
System Serial Number: 701441000256 (node-02)
System Rev: B0
System Storage Configuration: Mixed-Path HA- SYSCONFIG-A shows less shelves over 1 path:
Path using IOMB:
Shelf 0: DS224-12 Firmware rev. IOM12E A: 0250 IOM12E B: 0250
Shelf 1: DS224-12 Firmware rev. IOM12B A: 0130 IOM12B B: 0130
Shelf 2: DS224-12 Firmware rev. IOM12B A: 0130 IOM12B B: 0130
Shelf 3: DS224-12 Firmware rev. A: ---- IOM12B B: 0130
Path using IOMA:
Shelf 1: DS224-12 Firmware rev. IOM12B A: 0130 IOM12B B: 0130
Shelf 2: DS224-12 Firmware rev. IOM12B A: 0130 IOM12B B: 0130
- SAS-EXPANDER-MAP shows a shelf missing and all shelves connected after it missing from one path. In this case, shelf 52 is missing.
node-01:Expanders on channel 0a:
Level 1: WWN 500a098004cf03ff, ID 50, Serial Number ' SHJMS1441000930', Product 'DS424IOM6 ', Rev '0200', Slot B
Level 2: WWN 500a098004df3f7f, ID 51, Serial Number ' SHJMS1441000668', Product 'DS424IOM6 ', Rev '0200', Slot BNode-02:
Expanders on channel 4d:
Level 1: WWN 500a098004cf11ff, ID 57, Serial Number ' SHJMS1441000951', Product 'DS424IOM6 ', Rev '0200', Slot B
Level 2: WWN 500a098004cf00ff, ID 56, Serial Number ' SHJMS1441000944', Product 'DS424IOM6 ', Rev '0200', Slot B
Level 3: WWN 500a098004c9aa7f, ID 55, Serial Number ' SHJMS1442000106', Product 'DS424IOM6 ', Rev '0200', Slot B
Level 4: WWN 500a098004cdf2bf, ID 54, Serial Number ' SHJMS1442000111', Product 'DS424IOM6 ', Rev '0200', Slot B
Level 5: WWN 500a098004d53aff, ID 53, Serial Number ' SHJMS1442000104', Product 'DS424IOM6 ', Rev '0200', Slot B