Check_mk: ERROR: Duplicate service description (auto check) 'Disk IO sdb' for host 'thehost'! - 1st occurrence: check plugin / item: diskstat / 'sdb' - 2nd occurrence: check plugin / item: ucd_diskio / 'sdb'

Troubleshooting
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4

I would not recommend this over the operating system.
If you really need the OpenManage checks there you should disable all other SNMP sections not only the “ucd_diskio”.
In case where i use SNMP and agent in parallel, i disable all sections starting with hr_, if… , ucd, snmp and inv.