# Setting up Real User Monitoring

This page serves as a guide on the prerequisites for installing the DEM Collector and as an index for the Real User Monitor configuration help pages. Please note that there are two different versions of configuring [Real User Monitoring](https://www.manageengine.com/products/applications_manager/real-user-monitoring.html), depending on the version of Applications Manager you are using. By following the detailed instructions provided, you can ensure that your DEM Collector is properly installed and configured to effectively capture and analyze user interactions with your web application.

## System Requirements

The DEM Collector must be installed on a dedicated Windows / Linux machine - 8 GB RAM. The DEM Collector can work with both the Professional Edition and Enterprise Edition (with Probe Server) of Applications Manager.

The following table shows the recommended configuration of the system to deploy the DEM Collector in both the **Professional Edition / Plugin Professional Edition and Enterprise Edition / Plugin Enterprise Edition**:

| OS | No of Monitors | Processor | Memory | Hard Disk |
|---|---|---|---|---|
| Windows (Windows 11/ 10 (or) Windows Server 2025/ 2022/ 2019/ 2016) /<br>Linux (CentOS Stream 9/ Debian 11.x to 12.11/ Fedora 39 to 41/ openSUSE 15.x/ Oracle Linux 7.x to 10/ RHEL 7.x to 9.5/ SUSE Linux Enterprise 15.x/ Ubuntu 16.04 to 25/ Rocky Linux 10/ BOSS Linux 10) | 1 - 20 | 2 Core / 2.0 GHz and above | 8 GB RAM | 40 GB |

**Note:**

- Each Applications Manager instance can support **upto 20 DEM Collectors**.
- For each DEM Collector, we can add only up to 5 websites (5 monitors).
- On an average, a single DEM Collector can efficiently manage upto **5000 page views per minute** i.e. **200 million page views per month**. This performance may vary based on the hardware specifications of the hosting server.

## Configuring a Real User Monitor

Follow the steps given in the respective help pages below for instructions on installing and uninstalling the DEM Collector, and creating a new Real User monitor:

- [V2 Real User Monitoring configuration](https://www.manageengine.com/products/applications_manager/help/configuring-rum-monitoring-v2.html) (for Applications Manager version 171200 and above)
- [V1 Real User Monitoring configuration](https://www.manageengine.com/products/applications_manager/help/configuring-rum-monitoring-v1.html) (for Applications Manager versions below 171200)