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Disk Shelf cannot recognize one IOM Module

Last Updated:

Applies to

  • DS212-12
  • DS224-12
  • Reseating a faulty IOM12 has not resolved this issue


  • Disk Shelf cannot recognize one IOM Module.
  • IOM Module LED is not bright.

Shelf: XXX
          SES device path: local access: 0b.XXX.99
          Module type: IOM12; monitoring is active
         Shelf status: critical condition
          SES Configuration, shelf XXX:
          vendor identification=NETAPP
          product identification=DS212-12
          product revision level=0220
          Vendor-specific information:

Vendor Unique Element 83-IOM12: (SAS)
Element Status         Status Bytes  Status Descriptions
  1 [IOM12 A]    : OK                01,08,00,20   MASTER, RESERVED
  2: NOT INSTALLED     05,00,00,00
Vendor Unique Element 85-IOM12: (ACP)
Element Status         Status Bytes  Status Descriptions
  1 [IOM12 A]    : CRITICAL          02,18,00,40   FAIL
  2: NOT INSTALLED     05,18,00,00

sysconfig -a:
                       Shelf 0: DS212-12  Firmware rev. IOM12E A: 01XXX  IOM12E B: 01XXX
                       Shelf XXX: DS212-12  Firmware rev. IOM12 A: 0220       B: ----                       
                       Shelf 11: DS212-12  Firmware rev. IOM12 A: 0220  IOM12 B: 0220
                       Shelf 12: DS212-12  Firmware rev. IOM12 A: 0220  IOM12 B: 0220

  • Reseat or replace Shelf XXX IOM12 B module has not resolved this issue.

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