About Online System Health Management
The Online Health Management System (OHMS) is a hardware fault detection and recovery feature. It runs on all Cisco MDS switching, services, and supervisor modules and ensures the general health of any switch in the Cisco MDS 9000 Family. The OHMS monitors system hardware in the following ways:
- The OHMS component running on the active supervisor maintains control over all other OHMS components running on the other modules in the switch.
- The system health application running in the standby supervisor module only monitors the standby supervisor moduleif that module is available in the HA standby mode.
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