After IOM3 to IOM6 update on DS4243 shelves, both HA pair nodes are single-path
Applies to
- DS4243 / DS4246 (IOM3 to IOM6 upgrade)
- ONTAP 9
Issue
- After IOM3 to IOM6 upgrade, SAS-connect health subsystem reports degraded
- Health alerts report
Health Monitor process nchm: SinglePathToDiskShelf_Alert
to all connected shelves - Active IQ
SAS-SHELF
reports missing path shelves asUnknown shelf geometry
- SAS ports connected to the missing paths report
<UP>
with all PHYs enabled inSYSCONFIG-A
but list no shelves underneath SAS-EXPANDER-MAP
reports the other path with unknown/missing shelves
Example: 0a should report multiple shelves (instead only reports one and with incorrect ID 0), 0b 1 shelf (missing entirely), and 0c multiple shelves (reports 2 with ID 0, which is incorrect and there should be additional shelves listed)
Expanders on channel 0a:
Level 0: WWN 500a0980047f39ff, ID 0, Serial Number ' ', Product '', Rev '', Slot A
Expanders on channel 0b:
Expanders on channel 0c:
Level 0: WWN 500a0980047fcbbf, ID 0, Serial Number ' ', Product '', Rev '', Slot A
Level 1: WWN 500a0980047f3aff, ID 0, Serial Number ' ', Product '', Rev '', Slot A