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InBand ACP critical failure in both IOM12 modules of external shelf

  1. Last updated
    Mar 12, 2025
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Category:
disk-shelves
Specialty:
hw
Last Updated:
3/12/2025, 8:55:25 PM

Applies to

  • ACP processor
  • IOM12 shelves

Issue

  • Critical external shelf alert example:
ALERT         monitor.shelf.fault: Critical fault reported on disk storage shelf attached to channel 0b. Check fans, power supplies, disks, and temperature sensors.
 
::> storage shelf show
Module Operational
Shelf Name        Shelf ID Serial Number   Model       Type   Status
----------------- -------- --------------- ----------- ------ -----------
1.1               1        SHFHU1234567890 DS224-12    IOM12  Normal
2.11              11       SHFHU1234567891 DS224-12    IOM12  Normal
2.12              12       SHFHU1234567892 DS224-12    IOM12  Critical
3 entries were displayed.
  • ACP error example: 
::> storage shelf show -errors
Shelf Name: 2.12
Shelf UID: 50:0a:0b:0c:0d:0a:0b:0c
Serial Number: SHFHU1234567892
Error Type         Description
------------------ ---------------------------
ACPP               -
ACPP               -
  • storage shelf fault output example:
Enclosure Status: critical
Channel: 0b
Shelf: 12
Shelf Type: DS224-12
Product Serial Number: SHFHU1234567893
Module Type: IOM12
Vendor Unique Element 85-IOM12: (ACP)
Element Status                     Status Bytes  Status Descriptions
1 [IOM12 A]    : CRITICAL          02,18,00,40   NO ACPP, INBACP, FAIL
2 [IOM12 B]    : CRITICAL          02,18,00,40   NO ACPP, INBACP, FAIL
  • The issue remains after the shelf firmware updated:
::> storage shelf show -fields module-fw-revision
shelf module-fw-revision
----- ------------------
1.1   0310,0310
2.11  0310,0310
2.12  0310,0310
3 entries were displayed.
  • The issue remains after disabling/enabling the ACP subsystem

 

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