Users Guide

Table 2. Event Posting Level Descriptions (continued)
Post only Critical and Warning Events Posts only events with either Critical or Warning criticality into
related vCenters.
Post only Virtualization-Related Critical and Warning Events Post Virtualization related events received from hosts into
related vCenters. Virtualization related events are those that
Dell has selected to be most critical to hosts running virtual
machines.
When you configure your events and alarms, you can enable them. When enabled, critical hardware alarms can trigger the
OpenManage Integration for VMware vCenter to put the host system into a maintenance mode, and in certain cases, migrate
the virtual machines to another host system. The OpenManage Integration for VMware vCenter forwards events received from
managed Dell hosts, and creates alarms for those events. Use these alarms to trigger actions from vCenter, like a reboot,
maintenance mode, or migrate. For example, when a dual power supply fails and an alarm is created, the resulting action is to
migrate the virtual machine on that machine to a new one.
A host enters or leaves maintenance mode only as when you request it. If the host is in a cluster when it enters maintenance
mode, you are given the option to evacuate powered-off virtual machines. If this option is selected, each powered-off virtual
machine is migrated to another host, unless there is no compatible host available for the virtual machine in the cluster. While in
maintenance mode, the host does not allow deployment or power-on of a virtual machine. Virtual machines that are running on
a host entering maintenance mode need to be either migrated to another host or shut down, either manually or automatically by
VMware Distributed Resource Scheduling (DRS).
Any hosts outside of clusters, or in clusters without VMware Distributed Resource Scheduling (DRS) enabled, could see
virtual machines being shut down due to a critical event. DRS continuously monitors usage across a resource pool and
intelligently allocates available resources among virtual machines according to business needs. Use clusters with DRS configured
in conjunction with Dell Alarms to make sure that virtual machines are automatically migrated on critical hardware events. Listed
in the details of the on screen message are any clusters on this vCenter instance that may be impacted. Confirm that the
clusters are impacted before enabling Events and Alarms.
If you ever need to restore the default alarm settings, you can do so with the Reset Default Alarm button. This button is
a convenience to restore the default alarm configuration without uninstalling and reinstalling the product. If any Dell alarm
configurations have been changed since install, those changes are reverted using this button.
NOTE: To receive Dell events, you must enable the events.
NOTE: The OpenManage Integration for VMware vCenter pre-selects the virtualization-related events that are the
essential to hosts successfully running virtual machines. Dell host alarms are disabled by default. If Dell alarms are enabled,
the clusters should use the VMware Distributed Resource Scheduler to make sure that the virtual machines that send
critical events are automatically migrated.
Understanding OMSA For 11th Generation Dell PowerEdge Hosts
On PowerEdge servers earlier than 12th generation, it is mandatory to install OMSA to work with the OpenManage Integration
for VMware vCenter. OMSA is installed automatically on 11th generation Dell PowerEdge hosts during deployment, or if you
want to install it manually, you may still do so.
NOTE:
When deploying the OMSA agent using the OpenManage Integration for VMware vCenter starts the httpClient
service and enables port 8080 on and releases after ESXi 5.0 to download OMSA VIB and install it. Once the OMSA
installation is completed, the service automatically stops and the port is closed.
To configure OMSA on 11th generation Dell PowerEdge servers, choose from the following:
● Deploying an OMSA Agent Onto ESXi System
● Setting Up An OMSA Trap Destination
Deploying The OMSA Agent Onto An ESXi System
Install the OMSA VIB on an ESXi system to gather inventory and alert information from the systems.
NOTE:
OpenManage agents are required on Dell hosts earlier than Dell PowerEdge 12th generation servers. Install OMSA
using the OpenManage Integration for VMware vCenter or install manually to hosts prior to installing the OpenManage
End-To-End Hardware Management 31