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Degraded status in "system controller show"

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Applies to

  • FAS27xx
  • ONTAP 9

Issue

  • Degraded status in "system controller show" output

::> system controller show

Controller Name             System ID            Serial Number       Model      Status
-------------------------  -------------------  -----------------  ----------  ----------Ctl A                      xxxxxxxxxxxxx        xxxxxxxxxxxxxxxx   FAS27xx     degraded
Ctl B                      xxxxxxxxxxxxx        xxxxxxxxxxxxxxxx   FAS27xx     degraded

  • Running "system health alert show" command displays "MixOfIOMAandIOMBConnection_Alert"
  • SAS cabling in "sasadmin expander_map" output shows IOMA and IOMB of shelf to be mixed.

Expanders on channel 0a:
Level    1: WWN 500x09x00xxxxxxd, ID  1, Serial Number ' SHXXG2113xxxxxx', Product 'DS21212IOM12A   ', Rev '0260', Slot B
Level    2: WWN 500x09x00xxxxxx9, ID  2, Serial Number ' SHXXG2113xxxxxx', Product 'DS21212IOM12A   ', Rev '0260', Slot B
Level    3: WWN 500x09x00xxxxxxf, ID  0, Serial Number ' SHXXC2114xxxxxx', Product 'DS21212IOM12E   ', Rev '0220', Slot A

Expanders on channel 0b:
Level    1: WWN 500x09x00xxxxxxe, ID  0, Serial Number ' SHXXC2114xxxxxx', Product 'DS21212IOM12E   ', Rev '0220', Slot B
Level    2: WWN 500x09x00xxxxxx8, ID  2, Serial Number ' SHXXG2113xxxxxx', Product 'DS21212IOM12A   ', Rev '0260', Slot A
Level    3: WWN 500x09x00xxxxxx5, ID  1, Serial Number ' SHXXG2113xxxxxx', Product 'DS21212IOM12A   ', Rev '0260', Slot A

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