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- The management board is logically completely independent of the installed operating system. Meaning, you can reboot the operating system, without the management board and vice versa. Or in monitoring terms: One of them can be DOWN, while the other is UP.
- Fine-tuning of a dedicated host is easier and more powerful than the integrated Management board section. For example, if the management board is monitored through SNMP and the device's SNMP stack does not perform well, you might need a higher check interval. Using option 1 would force you to increase the interval for the agent based host as well, although that one might be perfectly performant.
- The dedicated host can be named in a way, that the relationship to the operating system host is obvious. For example, you can be as elaborate as "mgmt-$MYHOST$" or as brief as "$MYHOST$-c".
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