Time to read: 2 minutes 37 seconds | Published: March 7, 2025

Integrated Lights-Out (iLO) What is Integrated Lights-Out (iLO)?
Integrated Lights-Out (iLO) is a proprietary management technology built into HPE products that allows for remote control access to ProLiant servers, even without being connected to the organization’s main network. This capability is the origin of the “Lights Out” designation, enabling IT administrators to manage, monitor, and troubleshoot servers from anywhere, ensuring business continuity and efficient management of IT infrastructure.


- How does out-of-band management work?
- Why would an organization need iLO?
- How is HPE iLO unique?
How does out-of-band management work?
Out-of-band management works via a standard network connection, but it is a connection that exists exclusively for the purpose of remote management. Out-of-band management works much like a side door or secret entrance, wherein access is limited to a finite number of IT professionals, making the out-of-band network substantially more secure than the standard “in-band” network.
In addition to a much more secure point of access, out-of-band management also functions even if the server or network device is powered down, in sleep mode, or otherwise offline and unavailable via conventional network access. This can be used to remotely access devices on weekends, holidays, or outside of work hours, or it could be used to reboot or restore devices that have crashed.