---
title: "vApp. Number of Virtual Machines"
description: "This report aggregates historical data and shows the number of virtual machines (total and active) in selected vApps across a time range. The vApp."
canonical: "https://helpcenter.veeam.com/docs/mp/reports/vapp_number_of_vms_vmware.html"
breadcrumb: "Veeam MP Report Knowledge > Veeam VMware Performance History Reports > vApp. Number of Virtual Machines"
dateModified: "2026-09-10"
---

# vApp. Number of Virtual Machines

This report aggregates historical data and shows the number of virtual machines (total and active) in selected vApps across a time range.

## Description

The **vApp. Number of Virtual Machines** report is a linked report that is based on the Veeam Performance Report from the Veeam Report Library.

The report features a predefined list of VM state performance counters. The object picker control for the report scope has a predefined filter which limits selection to Objects of the **VMware Virtual Application** class and Groups that include objects of the **VMware Virtual Application** class.

## Parameters

Data Aggregation: defines the aggregation period (Hourly or Daily).

Date/time Selection: defines the time period to analyze in the report.

Histogram: defines the type of values shown on the x-axis of the chart.

Split into sections by: defines whether the sections will be split by vApps, selected groups/objects, or counters.

Chart Options: defines the type of an object for which a separate chart will be displayed. The list of available options depends on the Split into sections by value.

Scope: defines a list of Groups or Objects to analyze in the report. The **Add Group** option returns a Group and all objects that a group contains (with all performance counter instances). The **Add Object** option returns only the selected object.

Counters: defines collection rules for performance counters to analyze in the report.

## Sample Usage

Report on the number of active VMs in selected vApps during this week.

### Instructions

1. Open the vApp. Number of Virtual Machines report.
2. From the **Data Aggregation** list, select *Daily*.
3. From the **From** list, select *This Week* > *Monday*. From the **To** list, select *This Week* > *Friday*.
4. From the **Histogram** list, select *No*.
5. In the **Split into sections by** list, select *VMware Virtual Application*.
6. In the **Scope** section, click **Add Group**. Click **Search** and select the necessary vApps. Click **Add** and click **OK**.
7. In the **One chart for** list, select *Counter*.
8. In the Counters list, select *VMVApp\\Active(VAPP.Collect.vmActive)*.
9. Click **Run** to view the report.

**Report Output**

The report will show how the number of active VMs has changed for the selected vApps during the week.

The table will detail daily VMs numbers (sample count, average, minimum, maximum, and standard deviation values).

You can click the **Instance: _Total** link in the output table to drill down to the [Veeam Performance Details Report](veeam_performance_details_report.md).