5.8.5

Start or Stop Metric Collection for an Adapter Instance
When you start or stop metric collection for an adapter instance, metric collection starts or stops by using
specific adapter instances for the resources that you want to affect. Resources that do not use the adapter
instance are not affected.
If a resource collects metrics through more than one adapter instance, only the metrics that are collected
through the selected instance are stopped are started. Other metrics remain in the same collection state.
Procedure
1 Select Environment > Environment Overview.
2 On the List tab, select the resource or resources to affect.
You can press Ctrl+click to select multiple individual resources or Shift+click to select a range of
resources.
3 Click the Perform Multi-Collecting icon.
The Adapter Instance Resources window opens. The window lists all of the adapter instances that the
selected resources use.
4 Click the adapter instance to start or stop metric collection.
You can press Ctrl+click to select multiple individual adapter instances or Shift+click to select a range of
adapter instances. To select all of the listed adapter instances, click the heading row.
5 Click the Start Collecting or Stop Collecting icon to start or stop metric collection.
Using Maintenance Mode
Many resources in the enterprise might be intentionally taken offline. For example, a server might be
deactivated to update software. If vCenter Operations Manager collects metrics when a resource is offline, it
might generate incorrect anomalies and alerts that affect the data for setting dynamic thresholds for the
resource's attributes. When a resource is in maintenance mode, vCenter Operations Manager does not
collect metrics from the resource or generate anomalies or alerts for it.
If a resource undergoes maintenance at fixed intervals, you can create a maintenance schedule and assign it
to the resource. For example, you can put a resource in maintenance mode from midnight until 3 a.m. each
Tuesday night. You can also manually put a resource in maintenance mode, either indefinitely or for a
specified period of time. These methods are not mutually exclusive. You can manually put a resource in
maintenance mode, or take it out of maintenance mode, even it if has an assigned maintenance schedule.
Add a Maintenance Schedule
You can use maintenance schedules to put certain resources into maintenance mode at specified times. The
scheduled maintenance time can be daily, weekly, monthly, or yearly.
To set up a maintenance schedule for a resource, you define the schedule, then you assign the schedule to
the resource, either by adding the resource or by editing it. You can create multiple maintenance schedules,
and you can assign each schedule to multiple resources.
Procedure
1 Select Environment > Maintenance Schedules.
2 Click the Add Schedule icon at the top of the list of maintenance schedules.
3 Type a name for the maintenance schedule in the Schedule Name text box.
Chapter 3 Configuring Resources
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