Users Guide

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 Dell Management Plug-in to put the host system into a maintenance mode, and in certain cases, migrate the virtual
machines to another host system. The Dell Management Plug-in 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: The Dell Management Plug-in 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.
Related Tasks:
• Configuring Events And Alarms
Understanding OMSA For Dell PowerEdge 11th Generation Hosts
On servers earlier than Dell PowerEdge 12th generation servers, it is mandatory to install OMSA to work with the Dell
Management Plug-in. OMSA is installed automatically on Dell PowerEdge 11th generation hosts during deployment, or if
you want to install it manually, you may still do so.
NOTE: When deploying the OMSA agent using the Dell Management Plug-in 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 Dell PowerEdge 11th generation servers, choose from the following:
• Deploying an OMSA Agent Onto ESXi System
• Deploying an OMSA Agent Onto ESX System
• Setting Up An OMSA Trap Destination
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