Integrated Lights-Out


Integrated Lights-Out (iLO) is a remote server management technology developed by Hewlett-Packard Enterprise (HPE). It allows IT administrators to monitor, manage, and maintain servers from any location through a web-based interface. This tool provides access to server diagnostics, hardware status, and remote power controls, ensuring optimal server management and efficient troubleshooting without physical presence.


The phonetic spelling of the keyword “Integrated Lights-Out” in the International Phonetic Alphabet (IPA) is:ˈɪntɪˌɡreɪtɪd laɪts-aʊt

Key Takeaways

  1. Integrated Lights-Out (iLO) is a remote server management tool that allows administrators to monitor and control their servers remotely, reducing the need for physical on-site access.
  2. iLO provides various features such as remote console access, server health monitoring, virtual media support, and power management, simplifying server administration tasks and minimizing server downtime.
  3. Being a part of the HPE ProLiant server family, iLO is designed to improve overall server performance, enhance security, and reduce operating costs, making it a valuable solution for data center management.


Integrated Lights-Out (iLO) is an essential technology term because it refers to a remote management solution that enables IT administrators to efficiently monitor, manage, and troubleshoot server systems, regardless of the server’s power state or operating system.

By providing out-of-band management capabilities, iLO allows for early detection of potential issues, reducing system downtime and improving overall responsiveness.

This powerful technology empowers administrators to perform firmware updates, manage power settings, and control the server hardware remotely, fostering enhanced productivity and ensuring optimal performance of critical IT infrastructure.


Integrated Lights-Out (iLO) serves as a crucial tool for IT administrators, aiming to simplify the task of remotely managing and maintaining servers. This technology, designed primarily by Hewlett Packard Enterprise (HPE), enables a user to manage a server’s health, configuration, and administrative tasks without the need for physical access to the device.

The purpose of iLO is to ensure uninterrupted productivity by monitoring the server’s status, applying firmware updates, or troubleshooting issues remotely, thereby decreasing downtime and increasing overall efficiency within an organization. By employing iLO, administrators benefit from a comprehensive management solution that offers both hardware and software support.

Through an intuitive web interface, the iLO technology facilitates remote access to critical server information, such as power consumption, temperature metrics, and system error logs. Furthermore, iLO equips administrators with the ability to remotely power cycle servers, access the console, and perform firmware updates.

This streamlined approach not only delivers reliable server management but also allows IT teams to proactively resolve potential problems, maximize operational stability, and optimize overall data center performance.

Examples of Integrated Lights-Out

Integrated Lights-Out (iLO) is a remote server management technology created by Hewlett-Packard (HP) that enables IT administrators to perform various tasks on their servers remotely. Here are three real-world examples of how iLO is being used in different scenarios:

Data Center Management: In a large organization, there can be hundreds or even thousands of servers hosted within one or several data centers. iLO helps IT administrators to remotely manage servers, monitor their health, perform hardware diagnostics, and power them on or off, without the need to be physically present at the server location. This significantly reduces the time and effort required for managing the data center infrastructure.

Remote Office/Branch Office (ROBO) Management: Many companies have multiple offices or branches, each with their own local servers. Travelling to each location for server maintenance can be both time-consuming and costly. By implementing iLO technology, system administrators can access, maintain, troubleshoot, and monitor these remote servers without leaving their main office, dramatically improving response times and reducing travel costs.

Disaster Recovery/Business Continuity: In case of a disaster affecting the primary data center, organizations need to switch over to their backup systems to maintain business operations. iLO enables businesses to efficiently manage their backup servers, ensuring that their hardware is ready for failover when needed. For instance, administrators can monitor hardware health and perform diagnostics in advance, reducing the risk of failure during a disaster recovery scenario.

Integrated Lights-Out (iLO) FAQ

What is Integrated Lights-Out (iLO)?

Integrated Lights-Out, or iLO, is a remote server management technology by Hewlett Packard Enterprise (HPE) that allows administrators to control and monitor servers from any location. It provides a dedicated management interface that does not interfere with server performance, enabling secure and remote management of server hardware, firmware, and operating systems.

How does iLO work?

iLO works through a dedicated microprocessor and firmware on the server’s motherboard. It provides out-of-band management, meaning it is accessible even when the main system is offline. iLO connects to a separate management network, allowing administrators to remotely access, monitor, and troubleshoot servers through a web interface or command-line interface (CLI).

What are the benefits of using iLO?

Some benefits of using iLO include:

  • Remote server administration: Control and monitor servers from any location, reducing the need for physical access.
  • Out-of-band management: Access server management functions even when the main system is offline or unresponsive.
  • Proactive monitoring: Receive alerts and notifications on potential issues before they become critical.
  • Increased security: Secure access to server management through SSL encryption and user authentication.
  • Power management and control: Remotely control server power states and monitor power usage, helping optimize energy efficiency.

What versions of iLO are available?

HPE has released several different versions of iLO, with each version offering enhancements and improvements. The most recent version is iLO 5, which features advanced security capabilities, better performance, and an improved web-based interface. Earlier versions include iLO 4, iLO 3, and iLO 2. It is recommended for organizations to use the latest iLO version to take advantage of the newest features and security improvements.

How do I access the iLO web interface?

To access the iLO web interface, you will need the following:

  • iLO’s dedicated management IP address or hostname
  • A web browser supporting SSL encryption and JavaScript
  • Your iLO username and password, provided by your administrator

Enter the iLO IP address or hostname into your web browser’s address bar and sign in with your iLO username and password to access the web interface.

Can I access iLO from a mobile device?

Yes, HPE offers the HPE iLO Mobile App for iOS and Android devices, which allows you to access server management functions from your smartphone or tablet. The mobile app provides many of the same features as the web interface, including remote console access, power control, and hardware monitoring.

Related Technology Terms

  • Remote Server Management
  • Hardware Monitoring
  • Server Health Reporting
  • Out-of-Band Management
  • Power and Thermal Controls

Sources for More Information


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